Here are some example color selections to choose from or define your own. GraphicsMagick understands color names or hex values (.e.g. white or #ffffff).
| Name | Color | RGB | Hex | 
|---|---|---|---|
| aliceblue | aliceblue | 240, 248, 255 | #f0f8ff | 
| antiquewhite | antiquewhite | 250, 235, 215 | #faebd7 | 
| aqua | aqua | 0, 255, 255 | #00ffff | 
| aquamarine | aquamarine | 127, 255, 212 | #7fffd4 | 
| azure | azure | 240, 255, 255 | #f0ffff | 
| beige | beige | 245, 245, 220 | #f5f5dc | 
| bisque | bisque | 255, 228, 196 | #ffe4c4 | 
| black | black | 0, 0, 0 | #000000 | 
| blanchedalmond | blanchedalmond | 255, 235, 205 | #ffebcd | 
| blue | blue | 0, 0, 255 | #0000ff | 
| blueviolet | blueviolet | 138, 43, 226 | #8a2be2 | 
| brown | brown | 165, 42, 42 | #a52a2a | 
| burlywood | burlywood | 222, 184, 135 | #deb887 | 
| cadetblue | cadetblue | 95, 158, 160 | #5f9ea0 | 
| chartreuse | chartreuse | 127, 255, 0 | #7fff00 | 
| chocolate | chocolate | 210, 105, 30 | #d2691e | 
| coral | coral | 255, 127, 80 | #ff7f50 | 
| cornflowerblue | cornflowerblue | 100, 149, 237 | #6495ed | 
| cornsilk | cornsilk | 255, 248, 220 | #fff8dc | 
| crimson | crimson | 220, 20, 60 | #dc143c | 
| cyan | cyan | 0, 255, 255 | #00ffff | 
| darkblue | darkblue | 0, 0, 139 | #00008b | 
| darkcyan | darkcyan | 0, 139, 139 | #008b8b | 
| darkgoldenrod | darkgoldenrod | 184, 134, 11 | #b8860b | 
| darkgray | darkgray | 169, 169, 169 | #a9a9a9 | 
| darkgreen | darkgreen | 0, 100, 0 | #006400 | 
| darkgrey | darkgrey | 169, 169, 169 | #a9a9a9 | 
| darkkhaki | darkkhaki | 189, 183, 107 | #bdb76b | 
| darkmagenta | darkmagenta | 139, 0, 139 | #8b008b | 
| darkolivegreen | darkolivegreen | 85, 107, 47 | #556b2f | 
| darkorange | darkorange | 255, 140, 0 | #ff8c00 | 
| darkorchid | darkorchid | 153, 50, 204 | #9932cc | 
| darkred | darkred | 139, 0, 0 | #8b0000 | 
| darksalmon | darksalmon | 233, 150, 122 | #e9967a | 
| darkseagreen | darkseagreen | 143, 188, 143 | #8fbc8f | 
| darkslateblue | darkslateblue | 72, 61, 139 | #483d8b | 
| darkslategray | darkslategray | 47, 79, 79 | #2f4f4f | 
| darkslategrey | darkslategrey | 47, 79, 79 | #2f4f4f | 
| darkturquoise | darkturquoise | 0, 206, 209 | #00ced1 | 
| darkviolet | darkviolet | 148, 0, 211 | #9400d3 | 
| deeppink | deeppink | 255, 20, 147 | #ff1493 | 
| deepskyblue | deepskyblue | 0, 191, 255 | #00bfff | 
| dimgray | dimgray | 105, 105, 105 | #696969 | 
| dimgrey | dimgrey | 105, 105, 105 | #696969 | 
| dodgerblue | dodgerblue | 30, 144, 255 | #1e90ff | 
| firebrick | firebrick | 178, 34, 34 | #b22222 | 
| floralwhite | floralwhite | 255, 250, 240 | #fffaf0 | 
| forestgreen | forestgreen | 34, 139, 34 | #228b22 | 
| fractal | fractal | 128, 128, 128 | #808080 | 
| fuchsia | fuchsia | 255, 0, 255 | #ff00ff | 
| gainsboro | gainsboro | 220, 220, 220 | #dcdcdc | 
| ghostwhite | ghostwhite | 248, 248, 255 | #f8f8ff | 
| gold | gold | 255, 215, 0 | #ffd700 | 
| goldenrod | goldenrod | 218, 165, 32 | #daa520 | 
| gray0 | gray0 | 0, 0, 0 | #000000 | 
| gray1 | gray1 | 3, 3, 3 | #030303 | 
| gray2 | gray2 | 5, 5, 5 | #050505 | 
| gray3 | gray3 | 8, 8, 8 | #080808 | 
| gray4 | gray4 | 10, 10, 10 | #0a0a0a | 
| gray5 | gray5 | 13, 13, 13 | #0d0d0d | 
| gray6 | gray6 | 15, 15, 15 | #0f0f0f | 
| gray7 | gray7 | 18, 18, 18 | #121212 | 
| gray8 | gray8 | 20, 20, 20 | #141414 | 
| gray9 | gray9 | 23, 23, 23 | #171717 | 
| gray10 | gray10 | 26, 26, 26 | #1a1a1a | 
| gray11 | gray11 | 28, 28, 28 | #1c1c1c | 
| gray12 | gray12 | 31, 31, 31 | #1f1f1f | 
| gray13 | gray13 | 33, 33, 33 | #212121 | 
| gray14 | gray14 | 36, 36, 36 | #242424 | 
| gray15 | gray15 | 38, 38, 38 | #262626 | 
| gray16 | gray16 | 41, 41, 41 | #292929 | 
| gray17 | gray17 | 43, 43, 43 | #2b2b2b | 
| gray18 | gray18 | 46, 46, 46 | #2e2e2e | 
| gray19 | gray19 | 48, 48, 48 | #303030 | 
| gray20 | gray20 | 51, 51, 51 | #333333 | 
| gray21 | gray21 | 54, 54, 54 | #363636 | 
| gray22 | gray22 | 56, 56, 56 | #383838 | 
| gray23 | gray23 | 59, 59, 59 | #3b3b3b | 
| gray24 | gray24 | 61, 61, 61 | #3d3d3d | 
| gray25 | gray25 | 64, 64, 64 | #404040 | 
| gray26 | gray26 | 66, 66, 66 | #424242 | 
| gray27 | gray27 | 69, 69, 69 | #454545 | 
| gray28 | gray28 | 71, 71, 71 | #474747 | 
| gray29 | gray29 | 74, 74, 74 | #4a4a4a | 
| gray30 | gray30 | 77, 77, 77 | #4d4d4d | 
| gray31 | gray31 | 79, 79, 79 | #4f4f4f | 
| gray32 | gray32 | 82, 82, 82 | #525252 | 
| gray33 | gray33 | 84, 84, 84 | #545454 | 
| gray34 | gray34 | 87, 87, 87 | #575757 | 
| gray35 | gray35 | 89, 89, 89 | #595959 | 
| gray36 | gray36 | 92, 92, 92 | #5c5c5c | 
| gray37 | gray37 | 94, 94, 94 | #5e5e5e | 
| gray38 | gray38 | 97, 97, 97 | #616161 | 
| gray39 | gray39 | 99, 99, 99 | #636363 | 
| gray40 | gray40 | 102, 102, 102 | #666666 | 
| gray41 | gray41 | 105, 105, 105 | #696969 | 
| gray42 | gray42 | 107, 107, 107 | #6b6b6b | 
| gray43 | gray43 | 110, 110, 110 | #6e6e6e | 
| gray44 | gray44 | 112, 112, 112 | #707070 | 
| gray45 | gray45 | 115, 115, 115 | #737373 | 
| gray46 | gray46 | 117, 117, 117 | #757575 | 
| gray47 | gray47 | 120, 120, 120 | #787878 | 
| gray48 | gray48 | 122, 122, 122 | #7a7a7a | 
| gray49 | gray49 | 125, 125, 125 | #7d7d7d | 
| gray50 | gray50 | 127, 127, 127 | #7f7f7f | 
| gray51 | gray51 | 130, 130, 130 | #828282 | 
| gray52 | gray52 | 133, 133, 133 | #858585 | 
| gray53 | gray53 | 135, 135, 135 | #878787 | 
| gray54 | gray54 | 138, 138, 138 | #8a8a8a | 
| gray55 | gray55 | 140, 140, 140 | #8c8c8c | 
| gray56 | gray56 | 143, 143, 143 | #8f8f8f | 
| gray57 | gray57 | 145, 145, 145 | #919191 | 
| gray58 | gray58 | 148, 148, 148 | #949494 | 
| gray59 | gray59 | 150, 150, 150 | #969696 | 
| gray60 | gray60 | 153, 153, 153 | #999999 | 
| gray61 | gray61 | 156, 156, 156 | #9c9c9c | 
| gray62 | gray62 | 158, 158, 158 | #9e9e9e | 
| gray63 | gray63 | 161, 161, 161 | #a1a1a1 | 
| gray64 | gray64 | 163, 163, 163 | #a3a3a3 | 
| gray65 | gray65 | 166, 166, 166 | #a6a6a6 | 
| gray66 | gray66 | 168, 168, 168 | #a8a8a8 | 
| gray67 | gray67 | 171, 171, 171 | #ababab | 
| gray68 | gray68 | 173, 173, 173 | #adadad | 
| gray69 | gray69 | 176, 176, 176 | #b0b0b0 | 
| gray70 | gray70 | 179, 179, 179 | #b3b3b3 | 
| gray71 | gray71 | 181, 181, 181 | #b5b5b5 | 
| gray72 | gray72 | 184, 184, 184 | #b8b8b8 | 
| gray73 | gray73 | 186, 186, 186 | #bababa | 
| gray74 | gray74 | 189, 189, 189 | #bdbdbd | 
| gray75 | gray75 | 191, 191, 191 | #bfbfbf | 
| gray76 | gray76 | 194, 194, 194 | #c2c2c2 | 
| gray77 | gray77 | 196, 196, 196 | #c4c4c4 | 
| gray78 | gray78 | 199, 199, 199 | #c7c7c7 | 
| gray79 | gray79 | 201, 201, 201 | #c9c9c9 | 
| gray80 | gray80 | 204, 204, 204 | #cccccc | 
| gray81 | gray81 | 207, 207, 207 | #cfcfcf | 
| gray82 | gray82 | 209, 209, 209 | #d1d1d1 | 
| gray83 | gray83 | 212, 212, 212 | #d4d4d4 | 
| gray84 | gray84 | 214, 214, 214 | #d6d6d6 | 
| gray85 | gray85 | 217, 217, 217 | #d9d9d9 | 
| gray86 | gray86 | 219, 219, 219 | #dbdbdb | 
| gray87 | gray87 | 222, 222, 222 | #dedede | 
| gray88 | gray88 | 224, 224, 224 | #e0e0e0 | 
| gray89 | gray89 | 227, 227, 227 | #e3e3e3 | 
| gray90 | gray90 | 229, 229, 229 | #e5e5e5 | 
| gray91 | gray91 | 232, 232, 232 | #e8e8e8 | 
| gray92 | gray92 | 235, 235, 235 | #ebebeb | 
| gray93 | gray93 | 237, 237, 237 | #ededed | 
| gray94 | gray94 | 240, 240, 240 | #f0f0f0 | 
| gray95 | gray95 | 242, 242, 242 | #f2f2f2 | 
| gray96 | gray96 | 245, 245, 245 | #f5f5f5 | 
| gray97 | gray97 | 247, 247, 247 | #f7f7f7 | 
| gray98 | gray98 | 250, 250, 250 | #fafafa | 
| gray99 | gray99 | 252, 252, 252 | #fcfcfc | 
| gray100 | gray100 | 255, 255, 255 | #ffffff | 
| gray | gray | 126, 126, 126 | #7e7e7e | 
| green | green | 0, 128, 0 | #008000 | 
| greenyellow | greenyellow | 173, 255, 47 | #adff2f | 
| grey | grey | 128, 128, 128 | #808080 | 
| honeydew | honeydew | 240, 255, 240 | #f0fff0 | 
| hotpink | hotpink | 255, 105, 180 | #ff69b4 | 
| indianred | indianred | 205, 92, 92 | #cd5c5c | 
| indigo | indigo | 75, 0, 130 | #4b0082 | 
| ivory | ivory | 255, 255, 240 | #fffff0 | 
| khaki | khaki | 240, 230, 140 | #f0e68c | 
| lavender | lavender | 230, 230, 250 | #e6e6fa | 
| lavenderblush | lavenderblush | 255, 240, 245 | #fff0f5 | 
| lawngreen | lawngreen | 124, 252, 0 | #7cfc00 | 
| lemonchiffon | lemonchiffon | 255, 250, 205 | #fffacd | 
| lightblue | lightblue | 173, 216, 230 | #add8e6 | 
| lightcoral | lightcoral | 240, 128, 128 | #f08080 | 
| lightcyan | lightcyan | 224, 255, 255 | #e0ffff | 
| lightgoldenrodyellow | lightgoldenrodyellow | 250, 250, 210 | #fafad2 | 
| lightgray | lightgray | 211, 211, 211 | #d3d3d3 | 
| lightgreen | lightgreen | 144, 238, 144 | #90ee90 | 
| lightgrey | lightgrey | 211, 211, 211 | #d3d3d3 | 
| lightpink | lightpink | 255, 182, 193 | #ffb6c1 | 
| lightsalmon | lightsalmon | 255, 160, 122 | #ffa07a | 
| lightseagreen | lightseagreen | 32, 178, 170 | #20b2aa | 
| lightskyblue | lightskyblue | 135, 206, 250 | #87cefa | 
| lightslategray | lightslategray | 119, 136, 153 | #778899 | 
| lightslategrey | lightslategrey | 119, 136, 153 | #778899 | 
| lightsteelblue | lightsteelblue | 176, 196, 222 | #b0c4de | 
| lightyellow | lightyellow | 255, 255, 224 | #ffffe0 | 
| lime | lime | 0, 255, 0 | #00ff00 | 
| limegreen | limegreen | 50, 205, 50 | #32cd32 | 
| linen | linen | 250, 240, 230 | #faf0e6 | 
| magenta | magenta | 255, 0, 255 | #ff00ff | 
| maroon | maroon | 128, 0, 0 | #800000 | 
| mediumaquamarine | mediumaquamarine | 102, 205, 170 | #66cdaa | 
| mediumblue | mediumblue | 0, 0, 205 | #0000cd | 
| mediumorchid | mediumorchid | 186, 85, 211 | #ba55d3 | 
| mediumpurple | mediumpurple | 147, 112, 219 | #9370db | 
| mediumseagreen | mediumseagreen | 60, 179, 113 | #3cb371 | 
| mediumslateblue | mediumslateblue | 123, 104, 238 | #7b68ee | 
| mediumspringgreen | mediumspringgreen | 0, 250, 154 | #00fa9a | 
| mediumturquoise | mediumturquoise | 72, 209, 204 | #48d1cc | 
| mediumvioletred | mediumvioletred | 199, 21, 133 | #c71585 | 
| midnightblue | midnightblue | 25, 25, 112 | #191970 | 
| mintcream | mintcream | 245, 255, 250 | #f5fffa | 
| mistyrose | mistyrose | 255, 228, 225 | #ffe4e1 | 
| moccasin | moccasin | 255, 228, 181 | #ffe4b5 | 
| navajowhite | navajowhite | 255, 222, 173 | #ffdead | 
| navy | navy | 0, 0, 128 | #000080 | 
| none | none | 0, 0, 0 | #000000 | 
| oldlace | oldlace | 253, 245, 230 | #fdf5e6 | 
| olive | olive | 128, 128, 0 | #808000 | 
| olivedrab | olivedrab | 107, 142, 35 | #6b8e23 | 
| orange | orange | 255, 165, 0 | #ffa500 | 
| orangered | orangered | 255, 69, 0 | #ff4500 | 
| orchid | orchid | 218, 112, 214 | #da70d6 | 
| palegoldenrod | palegoldenrod | 238, 232, 170 | #eee8aa | 
| palegreen | palegreen | 152, 251, 152 | #98fb98 | 
| paleturquoise | paleturquoise | 175, 238, 238 | #afeeee | 
| palevioletred | palevioletred | 219, 112, 147 | #db7093 | 
| papayawhip | papayawhip | 255, 239, 213 | #ffefd5 | 
| peachpuff | peachpuff | 255, 218, 185 | #ffdab9 | 
| peru | peru | 205, 133, 63 | #cd853f | 
| pink | pink | 255, 192, 203 | #ffc0cb | 
| plum | plum | 221, 160, 221 | #dda0dd | 
| powderblue | powderblue | 176, 224, 230 | #b0e0e6 | 
| purple | purple | 128, 0, 128 | #800080 | 
| red | red | 255, 0, 0 | #ff0000 | 
| rosybrown | rosybrown | 188, 143, 143 | #bc8f8f | 
| royalblue | royalblue | 65, 105, 225 | #4169e1 | 
| saddlebrown | saddlebrown | 139, 69, 19 | #8b4513 | 
| salmon | salmon | 250, 128, 114 | #fa8072 | 
| sandybrown | sandybrown | 244, 164, 96 | #f4a460 | 
| seagreen | seagreen | 46, 139, 87 | #2e8b57 | 
| seashell | seashell | 255, 245, 238 | #fff5ee | 
| sienna | sienna | 160, 82, 45 | #a0522d | 
| silver | silver | 192, 192, 192 | #c0c0c0 | 
| skyblue | skyblue | 135, 206, 235 | #87ceeb | 
| slateblue | slateblue | 106, 90, 205 | #6a5acd | 
| slategray | slategray | 112, 128, 144 | #708090 | 
| slategrey | slategrey | 112, 128, 144 | #708090 | 
| snow | snow | 255, 250, 250 | #fffafa | 
| springgreen | springgreen | 0, 255, 127 | #00ff7f | 
| steelblue | steelblue | 70, 130, 180 | #4682b4 | 
| tan | tan | 210, 180, 140 | #d2b48c | 
| teal | teal | 0, 128, 128 | #008080 | 
| thistle | thistle | 216, 191, 216 | #d8bfd8 | 
| tomato | tomato | 255, 99, 71 | #ff6347 | 
| turquoise | turquoise | 64, 224, 208 | #40e0d0 | 
| violet | violet | 238, 130, 238 | #ee82ee | 
| wheat | wheat | 245, 222, 179 | #f5deb3 | 
| white | white | 255, 255, 255 | #ffffff | 
| whitesmoke | whitesmoke | 245, 245, 245 | #f5f5f5 | 
| yellow | yellow | 255, 255, 0 | #ffff00 | 
| yellowgreen | yellowgreen | 154, 205, 50 | #9acd32 |