Color names are resolved in the context of a color scheme. Graphviz currently supports the X11 scheme, the SVG scheme, and the Brewer schemes, with X11 being the default. Color names are case-insensitive. In addtition to color names defined by schemes you can also use custom colors. The Brewer color schemes below are covered by this license. The X11 color scheme aliceblue antiquewhite antiquewhite1 antiquewhite2 antiquewhite3 antiquewhite4 aqua aquamarine aquamarine1 aquamarine2 aquamarine3 aquamarine4 azure azure1 azure2 azure3 azure4 beige bisque bisque1 bisque2 bisque3 bisque4 black blanchedalmond blue blue1 blue2 blue3 blue4 blueviolet brown brown1 brown2 brown3 brown4 burlywood burlywood1 burlywood2 burlywood3 burlywood4 cadetblue cadetblue1 cadetblue2 cadetblue3 cadetblue4 chartreuse chartreuse1 chartreuse2 chartreuse3 chartreuse4 chocolate chocolate1 chocolate2 chocolate3 chocolate4 coral coral1 coral2 coral3 coral4 cornflowerblue cornsilk cornsilk1 cornsilk2 cornsilk3 cornsilk4 crimson cyan cyan1 cyan2 cyan3 cyan4 darkblue darkcyan darkgoldenrod darkgoldenrod1 darkgoldenrod2 darkgoldenrod3 darkgoldenrod4 darkgray darkgreen darkgrey darkkhaki darkmagenta darkolivegreen darkolivegreen1 darkolivegreen2 darkolivegreen3 darkolivegreen4 darkorange darkorange1 darkorange2 darkorange3 darkorange4 darkorchid darkorchid1 darkorchid2 darkorchid3 darkorchid4 darkred darksalmon darkseagreen darkseagreen1 darkseagreen2 darkseagreen3 darkseagreen4 darkslateblue darkslategray darkslategray1 darkslategray2 darkslategray3 darkslategray4 darkslategrey darkturquoise darkviolet deeppink deeppink1 deeppink2 deeppink3 deeppink4 deepskyblue deepskyblue1 deepskyblue2 deepskyblue3 deepskyblue4 dimgray dimgrey dodgerblue dodgerblue1 dodgerblue2 dodgerblue3 dodgerblue4 firebrick firebrick1 firebrick2 firebrick3 firebrick4 floralwhite forestgreen fuchsia gainsboro ghostwhite gold gold1 gold2 gold3 gold4 goldenrod goldenrod1 goldenrod2 goldenrod3 goldenrod4 gray gray0 gray1 gray10 gray100 gray11 gray12 gray13 gray14 gray15 gray16 gray17 gray18 gray19 gray2 gray20 gray21 gray22 gray23 gray24 gray25 gray26 gray27 gray28 gray29 gray3 gray30 gray31 gray32 gray33 gray34 gray35 gray36 gray37 gray38 gray39 gray4 gray40 gray41 gray42 gray43 gray44 gray45 gray46 gray47 gray48 gray49 gray5 gray50 gray51 gray52 gray53 gray54 gray55 gray56 gray57 gray58 gray59 gray6 gray60 gray61 gray62 gray63 gray64 gray65 gray66 gray67 gray68 gray69 gray7 gray70 gray71 gray72 gray73 gray74 gray75 gray76 gray77 gray78 gray79 gray8 gray80 gray81 gray82 gray83 gray84 gray85 gray86 gray87 gray88 gray89 gray9 gray90 gray91 gray92 gray93 gray94 gray95 gray96 gray97 gray98 gray99 green green1 green2 green3 green4 greenyellow grey grey0 grey1 grey10 grey100 grey11 grey12 grey13 grey14 grey15 grey16 grey17 grey18 grey19 grey2 grey20 grey21 grey22 grey23 grey24 grey25 grey26 grey27 grey28 grey29 grey3 grey30 grey31 grey32 grey33 grey34 grey35 grey36 grey37 grey38 grey39 grey4 grey40 grey41 grey42 grey43 grey44 grey45 grey46 grey47 grey48 grey49 grey5 grey50 grey51 grey52 grey53 grey54 grey55 grey56 grey57 grey58 grey59 grey6 grey60 grey61 grey62 grey63 grey64 grey65 grey66 grey67 grey68 grey69 grey7 grey70 grey71 grey72 grey73 grey74 grey75 grey76 grey77 grey78 grey79 grey8 grey80 grey81 grey82 grey83 grey84 grey85 grey86 grey87 grey88 grey89 grey9 grey90 grey91 grey92 grey93 grey94 grey95 grey96 grey97 grey98 grey99 honeydew honeydew1 honeydew2 honeydew3 honeydew4 hotpink hotpink1 hotpink2 hotpink3 hotpink4 indianred indianred1 indianred2 indianred3 indianred4 indigo invis ivory ivory1 ivory2 ivory3 ivory4 khaki khaki1 khaki2 khaki3 khaki4 lavender lavenderblush lavenderblush1 lavenderblush2 lavenderblush3 lavenderblush4 lawngreen lemonchiffon lemonchiffon1 lemonchiffon2 lemonchiffon3 lemonchiffon4 lightblue lightblue1 lightblue2 lightblue3 lightblue4 lightcoral lightcyan lightcyan1 lightcyan2 lightcyan3 lightcyan4 lightgoldenrod lightgoldenrod1 lightgoldenrod2 lightgoldenrod3 lightgoldenrod4 lightgoldenrodyellow lightgray lightgreen lightgrey lightpink lightpink1 lightpink2 lightpink3 lightpink4 lightsalmon lightsalmon1 lightsalmon2 lightsalmon3 lightsalmon4 lightseagreen lightskyblue lightskyblue1 lightskyblue2 lightskyblue3 lightskyblue4 lightslateblue lightslategray lightslategrey lightsteelblue lightsteelblue1 lightsteelblue2 lightsteelblue3 lightsteelblue4 lightyellow lightyellow1 lightyellow2 lightyellow3 lightyellow4 lime limegreen linen magenta magenta1 magenta2 magenta3 magenta4 maroon maroon1 maroon2 maroon3 maroon4 mediumaquamarine mediumblue mediumorchid mediumorchid1 mediumorchid2 mediumorchid3 mediumorchid4 mediumpurple mediumpurple1 mediumpurple2 mediumpurple3 mediumpurple4 mediumseagreen mediumslateblue mediumspringgreen mediumturquoise mediumvioletred midnightblue mintcream mistyrose mistyrose1 mistyrose2 mistyrose3 mistyrose4 moccasin navajowhite navajowhite1 navajowhite2 navajowhite3 navajowhite4 navy navyblue none oldlace olive olivedrab olivedrab1 olivedrab2 olivedrab3 olivedrab4 orange orange1 orange2 orange3 orange4 orangered orangered1 orangered2 orangered3 orangered4 orchid orchid1 orchid2 orchid3 orchid4 palegoldenrod palegreen palegreen1 palegreen2 palegreen3 palegreen4 paleturquoise paleturquoise1 paleturquoise2 paleturquoise3 paleturquoise4 palevioletred palevioletred1 palevioletred2 palevioletred3 palevioletred4 papayawhip peachpuff peachpuff1 peachpuff2 peachpuff3 peachpuff4 peru pink pink1 pink2 pink3 pink4 plum plum1 plum2 plum3 plum4 powderblue purple purple1 purple2 purple3 purple4 rebeccapurple red red1 red2 red3 red4 rosybrown rosybrown1 rosybrown2 rosybrown3 rosybrown4 royalblue royalblue1 royalblue2 royalblue3 royalblue4 saddlebrown salmon salmon1 salmon2 salmon3 salmon4 sandybrown seagreen seagreen1 seagreen2 seagreen3 seagreen4 seashell seashell1 seashell2 seashell3 seashell4 sienna sienna1 sienna2 sienna3 sienna4 silver skyblue skyblue1 skyblue2 skyblue3 skyblue4 slateblue slateblue1 slateblue2 slateblue3 slateblue4 slategray slategray1 slategray2 slategray3 slategray4 slategrey snow snow1 snow2 snow3 snow4 springgreen springgreen1 springgreen2 springgreen3 springgreen4 steelblue steelblue1 steelblue2 steelblue3 steelblue4 tan tan1 tan2 tan3 tan4 teal thistle thistle1 thistle2 thistle3 thistle4 tomato tomato1 tomato2 tomato3 tomato4 transparent turquoise turquoise1 turquoise2 turquoise3 turquoise4 violet violetred violetred1 violetred2 violetred3 violetred4 webgray webgreen webgrey webmaroon webpurple wheat wheat1 wheat2 wheat3 wheat4 white whitesmoke x11gray x11green x11grey x11maroon x11purple yellow yellow1 yellow2 yellow3 yellow4 yellowgreen The SVG color scheme aliceblue antiquewhite aqua aquamarine azure beige bisque black blanchedalmond blue blueviolet brown burlywood cadetblue chartreuse chocolate coral cornflowerblue cornsilk crimson cyan darkblue darkcyan darkgoldenrod darkgray darkgreen darkgrey darkkhaki darkmagenta darkolivegreen darkorange darkorchid darkred darksalmon darkseagreen darkslateblue darkslategray darkslategrey darkturquoise darkviolet deeppink deepskyblue dimgray dimgrey dodgerblue firebrick floralwhite forestgreen fuchsia gainsboro ghostwhite gold goldenrod gray grey green greenyellow honeydew hotpink indianred indigo ivory khaki lavender lavenderblush lawngreen lemonchiffon lightblue lightcoral lightcyan lightgoldenrodyellow lightgray lightgreen lightgrey lightpink lightsalmon lightseagreen lightskyblue lightslategray lightslategrey lightsteelblue lightyellow lime limegreen linen magenta maroon mediumaquamarine mediumblue mediumorchid mediumpurple mediumseagreen mediumslateblue mediumspringgreen mediumturquoise mediumvioletred midnightblue mintcream mistyrose moccasin navajowhite navy oldlace olive olivedrab orange orangered orchid palegoldenrod palegreen paleturquoise palevioletred papayawhip peachpuff peru pink plum powderblue purple red rosybrown royalblue saddlebrown salmon sandybrown seagreen seashell sienna silver skyblue slateblue slategray slategrey snow springgreen steelblue tan teal thistle tomato turquoise violet wheat white whitesmoke yellow yellowgreen Brewer color schemes accent3 color scheme 1 2 3 accent4 color scheme 1 2 3 4 accent5 color scheme 1 2 3 4 5 accent6 color scheme 1 2 3 4 5 6 accent7 color scheme 1 2 3 4 5 6 7 accent8 color scheme 1 2 3 4 5 6 7 8 blues3 color scheme 1 2 3 blues4 color scheme 1 2 3 4 blues5 color scheme 1 2 3 4 5 blues6 color scheme 1 2 3 4 5 6 blues7 color scheme 1 2 3 4 5 6 7 blues8 color scheme 1 2 3 4 5 6 7 8 blues9 color scheme 1 2 3 4 5 6 7 8 9 brbg10 color scheme 1 2 3 4 5 6 7 8 9 10 brbg11 color scheme 1 2 3 4 5 6 7 8 9 10 11 brbg3 color scheme 1 2 3 brbg4 color scheme 1 2 3 4 brbg5 color scheme 1 2 3 4 5 brbg6 color scheme 1 2 3 4 5 6 brbg7 color scheme 1 2 3 4 5 6 7 brbg8 color scheme 1 2 3 4 5 6 7 8 brbg9 color scheme 1 2 3 4 5 6 7 8 9 bugn3 color scheme 1 2 3 bugn4 color scheme 1 2 3 4 bugn5 color scheme 1 2 3 4 5 bugn6 color scheme 1 2 3 4 5 6 bugn7 color scheme 1 2 3 4 5 6 7 bugn8 color scheme 1 2 3 4 5 6 7 8 bugn9 color scheme 1 2 3 4 5 6 7 8 9 bupu3 color scheme 1 2 3 bupu4 color scheme 1 2 3 4 bupu5 color scheme 1 2 3 4 5 bupu6 color scheme 1 2 3 4 5 6 bupu7 color scheme 1 2 3 4 5 6 7 bupu8 color scheme 1 2 3 4 5 6 7 8 bupu9 color scheme 1 2 3 4 5 6 7 8 9 dark23 color scheme 1 2 3 dark24 color scheme 1 2 3 4 dark25 color scheme 1 2 3 4 5 dark26 color scheme 1 2 3 4 5 6 dark27 color scheme 1 2 3 4 5 6 7 dark28 color scheme 1 2 3 4 5 6 7 8 gnbu3 color scheme 1 2 3 gnbu4 color scheme 1 2 3 4 gnbu5 color scheme 1 2 3 4 5 gnbu6 color scheme 1 2 3 4 5 6 gnbu7 color scheme 1 2 3 4 5 6 7 gnbu8 color scheme 1 2 3 4 5 6 7 8 gnbu9 color scheme 1 2 3 4 5 6 7 8 9 greens3 color scheme 1 2 3 greens4 color scheme 1 2 3 4 greens5 color scheme 1 2 3 4 5 greens6 color scheme 1 2 3 4 5 6 greens7 color scheme 1 2 3 4 5 6 7 greens8 color scheme 1 2 3 4 5 6 7 8 greens9 color scheme 1 2 3 4 5 6 7 8 9 greys3 color scheme 1 2 3 greys4 color scheme 1 2 3 4 greys5 color scheme 1 2 3 4 5 greys6 color scheme 1 2 3 4 5 6 greys7 color scheme 1 2 3 4 5 6 7 greys8 color scheme 1 2 3 4 5 6 7 8 greys9 color scheme 1 2 3 4 5 6 7 8 9 oranges3 color scheme 1 2 3 oranges4 color scheme 1 2 3 4 oranges5 color scheme 1 2 3 4 5 oranges6 color scheme 1 2 3 4 5 6 oranges7 color scheme 1 2 3 4 5 6 7 oranges8 color scheme 1 2 3 4 5 6 7 8 oranges9 color scheme 1 2 3 4 5 6 7 8 9 orrd3 color scheme 1 2 3 orrd4 color scheme 1 2 3 4 orrd5 color scheme 1 2 3 4 5 orrd6 color scheme 1 2 3 4 5 6 orrd7 color scheme 1 2 3 4 5 6 7 orrd8 color scheme 1 2 3 4 5 6 7 8 orrd9 color scheme 1 2 3 4 5 6 7 8 9 paired10 color scheme 1 2 3 4 5 6 7 8 9 10 paired11 color scheme 1 2 3 4 5 6 7 8 9 10 11 paired12 color scheme 1 2 3 4 5 6 7 8 9 10 11 12 paired3 color scheme 1 2 3 paired4 color scheme 1 2 3 4 paired5 color scheme 1 2 3 4 5 paired6 color scheme 1 2 3 4 5 6 paired7 color scheme 1 2 3 4 5 6 7 paired8 color scheme 1 2 3 4 5 6 7 8 paired9 color scheme 1 2 3 4 5 6 7 8 9 pastel13 color scheme 1 2 3 pastel14 color scheme 1 2 3 4 pastel15 color scheme 1 2 3 4 5 pastel16 color scheme 1 2 3 4 5 6 pastel17 color scheme 1 2 3 4 5 6 7 pastel18 color scheme 1 2 3 4 5 6 7 8 pastel19 color scheme 1 2 3 4 5 6 7 8 9 pastel23 color scheme 1 2 3 pastel24 color scheme 1 2 3 4 pastel25 color scheme 1 2 3 4 5 pastel26 color scheme 1 2 3 4 5 6 pastel27 color scheme 1 2 3 4 5 6 7 pastel28 color scheme 1 2 3 4 5 6 7 8 piyg10 color scheme 1 2 3 4 5 6 7 8 9 10 piyg11 color scheme 1 2 3 4 5 6 7 8 9 10 11 piyg3 color scheme 1 2 3 piyg4 color scheme 1 2 3 4 piyg5 color scheme 1 2 3 4 5 piyg6 color scheme 1 2 3 4 5 6 piyg7 color scheme 1 2 3 4 5 6 7 piyg8 color scheme 1 2 3 4 5 6 7 8 piyg9 color scheme 1 2 3 4 5 6 7 8 9 prgn10 color scheme 1 2 3 4 5 6 7 8 9 10 prgn11 color scheme 1 2 3 4 5 6 7 8 9 10 11 prgn3 color scheme 1 2 3 prgn4 color scheme 1 2 3 4 prgn5 color scheme 1 2 3 4 5 prgn6 color scheme 1 2 3 4 5 6 prgn7 color scheme 1 2 3 4 5 6 7 prgn8 color scheme 1 2 3 4 5 6 7 8 prgn9 color scheme 1 2 3 4 5 6 7 8 9 pubu3 color scheme 1 2 3 pubu4 color scheme 1 2 3 4 pubu5 color scheme 1 2 3 4 5 pubu6 color scheme 1 2 3 4 5 6 pubu7 color scheme 1 2 3 4 5 6 7 pubu8 color scheme 1 2 3 4 5 6 7 8 pubu9 color scheme 1 2 3 4 5 6 7 8 9 pubugn3 color scheme 1 2 3 pubugn4 color scheme 1 2 3 4 pubugn5 color scheme 1 2 3 4 5 pubugn6 color scheme 1 2 3 4 5 6 pubugn7 color scheme 1 2 3 4 5 6 7 pubugn8 color scheme 1 2 3 4 5 6 7 8 pubugn9 color scheme 1 2 3 4 5 6 7 8 9 puor10 color scheme 1 2 3 4 5 6 7 8 9 10 puor11 color scheme 1 2 3 4 5 6 7 8 9 10 11 puor3 color scheme 1 2 3 puor4 color scheme 1 2 3 4 puor5 color scheme 1 2 3 4 5 puor6 color scheme 1 2 3 4 5 6 puor7 color scheme 1 2 3 4 5 6 7 puor8 color scheme 1 2 3 4 5 6 7 8 puor9 color scheme 1 2 3 4 5 6 7 8 9 purd3 color scheme 1 2 3 purd4 color scheme 1 2 3 4 purd5 color scheme 1 2 3 4 5 purd6 color scheme 1 2 3 4 5 6 purd7 color scheme 1 2 3 4 5 6 7 purd8 color scheme 1 2 3 4 5 6 7 8 purd9 color scheme 1 2 3 4 5 6 7 8 9 purples3 color scheme 1 2 3 purples4 color scheme 1 2 3 4 purples5 color scheme 1 2 3 4 5 purples6 color scheme 1 2 3 4 5 6 purples7 color scheme 1 2 3 4 5 6 7 purples8 color scheme 1 2 3 4 5 6 7 8 purples9 color scheme 1 2 3 4 5 6 7 8 9 rdbu10 color scheme 1 2 3 4 5 6 7 8 9 10 rdbu11 color scheme 1 2 3 4 5 6 7 8 9 10 11 rdbu3 color scheme 1 2 3 rdbu4 color scheme 1 2 3 4 rdbu5 color scheme 1 2 3 4 5 rdbu6 color scheme 1 2 3 4 5 6 rdbu7 color scheme 1 2 3 4 5 6 7 rdbu8 color scheme 1 2 3 4 5 6 7 8 rdbu9 color scheme 1 2 3 4 5 6 7 8 9 rdgy10 color scheme 1 2 3 4 5 6 7 8 9 10 rdgy11 color scheme 1 2 3 4 5 6 7 8 9 10 11 rdgy3 color scheme 1 2 3 rdgy4 color scheme 1 2 3 4 rdgy5 color scheme 1 2 3 4 5 rdgy6 color scheme 1 2 3 4 5 6 rdgy7 color scheme 1 2 3 4 5 6 7 rdgy8 color scheme 1 2 3 4 5 6 7 8 rdgy9 color scheme 1 2 3 4 5 6 7 8 9 rdpu3 color scheme 1 2 3 rdpu4 color scheme 1 2 3 4 rdpu5 color scheme 1 2 3 4 5 rdpu6 color scheme 1 2 3 4 5 6 rdpu7 color scheme 1 2 3 4 5 6 7 rdpu8 color scheme 1 2 3 4 5 6 7 8 rdpu9 color scheme 1 2 3 4 5 6 7 8 9 rdylbu10 color scheme 1 2 3 4 5 6 7 8 9 10 rdylbu11 color scheme 1 2 3 4 5 6 7 8 9 10 11 rdylbu3 color scheme 1 2 3 rdylbu4 color scheme 1 2 3 4 rdylbu5 color scheme 1 2 3 4 5 rdylbu6 color scheme 1 2 3 4 5 6 rdylbu7 color scheme 1 2 3 4 5 6 7 rdylbu8 color scheme 1 2 3 4 5 6 7 8 rdylbu9 color scheme 1 2 3 4 5 6 7 8 9 rdylgn10 color scheme 1 2 3 4 5 6 7 8 9 10 rdylgn11 color scheme 1 2 3 4 5 6 7 8 9 10 11 rdylgn3 color scheme 1 2 3 rdylgn4 color scheme 1 2 3 4 rdylgn5 color scheme 1 2 3 4 5 rdylgn6 color scheme 1 2 3 4 5 6 rdylgn7 color scheme 1 2 3 4 5 6 7 rdylgn8 color scheme 1 2 3 4 5 6 7 8 rdylgn9 color scheme 1 2 3 4 5 6 7 8 9 reds3 color scheme 1 2 3 reds4 color scheme 1 2 3 4 reds5 color scheme 1 2 3 4 5 reds6 color scheme 1 2 3 4 5 6 reds7 color scheme 1 2 3 4 5 6 7 reds8 color scheme 1 2 3 4 5 6 7 8 reds9 color scheme 1 2 3 4 5 6 7 8 9 set13 color scheme 1 2 3 set14 color scheme 1 2 3 4 set15 color scheme 1 2 3 4 5 set16 color scheme 1 2 3 4 5 6 set17 color scheme 1 2 3 4 5 6 7 set18 color scheme 1 2 3 4 5 6 7 8 set19 color scheme 1 2 3 4 5 6 7 8 9 set23 color scheme 1 2 3 set24 color scheme 1 2 3 4 set25 color scheme 1 2 3 4 5 set26 color scheme 1 2 3 4 5 6 set27 color scheme 1 2 3 4 5 6 7 set28 color scheme 1 2 3 4 5 6 7 8 set310 color scheme 1 2 3 4 5 6 7 8 9 10 set311 color scheme 1 2 3 4 5 6 7 8 9 10 11 set312 color scheme 1 2 3 4 5 6 7 8 9 10 11 12 set33 color scheme 1 2 3 set34 color scheme 1 2 3 4 set35 color scheme 1 2 3 4 5 set36 color scheme 1 2 3 4 5 6 set37 color scheme 1 2 3 4 5 6 7 set38 color scheme 1 2 3 4 5 6 7 8 set39 color scheme 1 2 3 4 5 6 7 8 9 spectral10 color scheme 1 2 3 4 5 6 7 8 9 10 spectral11 color scheme 1 2 3 4 5 6 7 8 9 10 11 spectral3 color scheme 1 2 3 spectral4 color scheme 1 2 3 4 spectral5 color scheme 1 2 3 4 5 spectral6 color scheme 1 2 3 4 5 6 spectral7 color scheme 1 2 3 4 5 6 7 spectral8 color scheme 1 2 3 4 5 6 7 8 spectral9 color scheme 1 2 3 4 5 6 7 8 9 ylgn3 color scheme 1 2 3 ylgn4 color scheme 1 2 3 4 ylgn5 color scheme 1 2 3 4 5 ylgn6 color scheme 1 2 3 4 5 6 ylgn7 color scheme 1 2 3 4 5 6 7 ylgn8 color scheme 1 2 3 4 5 6 7 8 ylgn9 color scheme 1 2 3 4 5 6 7 8 9 ylgnbu3 color scheme 1 2 3 ylgnbu4 color scheme 1 2 3 4 ylgnbu5 color scheme 1 2 3 4 5 ylgnbu6 color scheme 1 2 3 4 5 6 ylgnbu7 color scheme 1 2 3 4 5 6 7 ylgnbu8 color scheme 1 2 3 4 5 6 7 8 ylgnbu9 color scheme 1 2 3 4 5 6 7 8 9 ylorbr3 color scheme 1 2 3 ylorbr4 color scheme 1 2 3 4 ylorbr5 color scheme 1 2 3 4 5 ylorbr6 color scheme 1 2 3 4 5 6 ylorbr7 color scheme 1 2 3 4 5 6 7 ylorbr8 color scheme 1 2 3 4 5 6 7 8 ylorbr9 color scheme 1 2 3 4 5 6 7 8 9 ylorrd3 color scheme 1 2 3 ylorrd4 color scheme 1 2 3 4 ylorrd5 color scheme 1 2 3 4 5 ylorrd6 color scheme 1 2 3 4 5 6 ylorrd7 color scheme 1 2 3 4 5 6 7 ylorrd8 color scheme 1 2 3 4 5 6 7 8 ylorrd9 color scheme 1 2 3 4 5 6 7 8 9 ColorBrewer License Apache-Style Software License for ColorBrewer software and ColorBrewer Color Schemes, Version 1.