AWTK 目前支持以下颜色格式：
- 十六机制格式。
RGB 三个通道分别用两个十六进制的字符表示，alpha 通道为 0xff（即不透明）。如：
#ffeedd 表示 R、G、B 分别为 0xff、0xee、0xdd
- rgb(R,G,B) 格式。
括号中的 R、G、B 为 0 到 255 之间的十进制数，alpha 通道为 0xff（即不透明）。如：
rgb(100, 150, 200) 表示 R、G、B 分别为 100、150、200
- rgba(R,G,B,A) 格式。
这是唯一支持半透明颜色的方式。
括号中的 R、G、B 为 0 到 255 之间的十进制数，A 的为 0 到 1 之间的小数。如：
rgba(100, 150, 200, 0.5) 表示 R、G、B, A 分别为 100、150、200、0.5
注意：半透明颜色填充相对于不透明颜色填充，要慢很多，请谨慎使用。
- 英文名称。目前支持的颜色名称有：
| 名称 | 颜色值 |
|---|---|
| aliceblue | #f0f8ff |
| antiquewhite | #faebd7 |
| aqua | #00ffff |
| aquamarine | #7fffd4 |
| azure | #f0ffff |
| beige | #f5f5dc |
| bisque | #ffe4c4 |
| black | #000000 |
| blanchedalmond | #ffebcd |
| blue | #0000ff |
| blueviolet | #8a2be2 |
| brown | #a52a2a |
| burlywood | #deb887 |
| cadetblue | #5f9ea0 |
| chartreuse | #7fff00 |
| chocolate | #d2691e |
| coral | #ff7f50 |
| cornflowerblue | #6495ed |
| cornsilk | #fff8dc |
| crimson | #dc143c |
| cyan | #00ffff |
| darkblue | #00008b |
| darkcyan | #008b8b |
| darkgoldenrod | #b8860b |
| darkgray | #a9a9a9 |
| darkgreen | #006400 |
| darkkhaki | #bdb76b |
| darkmagenta | #8b008b |
| darkolivegreen | #556b2f |
| darkorange | #ff8c00 |
| darkorchid | #9932cc |
| darkred | #8b0000 |
| darksalmon | #e9967a |
| darkseagreen | #8fbc8f |
| darkslateblue | #483d8b |
| darkslategray | #2f4f4f |
| darkturquoise | #00ced1 |
| darkviolet | #9400d3 |
| deeppink | #ff1493 |
| deepskyblue | #00bfff |
| dimgray | #696969 |
| dodgerblue | #1e90ff |
| firebrick | #b22222 |
| floralwhite | #fffaf0 |
| forestgreen | #228b22 |
| fuchsia | #ff00ff |
| gainsboro | #dcdcdc |
| ghostwhite | #f8f8ff |
| gold | #ffd700 |
| goldenrod | #daa520 |
| gray | #bebebe |
| green | #008000 |
| greenyellow | #adff2f |
| honeydew | #f0fff0 |
| hotpink | #ff69b4 |
| indianred | #cd5c5c |
| indigo | #4b0082 |
| ivory | #fffff0 |
| khaki | #f0d58c |
| lavender | #e6e6fa |
| lavenderblush | #fff0f5 |
| lawngreen | #7cfc00 |
| lemonchiffon | #fffacd |
| lightblue | #add8e6 |
| lightcoral | #f08080 |
| lightcyan | #e0ffff |
| lightgoldenrodyellow | #fafad2 |
| lightgreen | #90ee90 |
| lightgrey | #d3d3d3 |
| lightpink | #ffb6c1 |
| lightsalmon | #ffa07a |
| lightseagreen | #20b2aa |
| lightskyblue | #87cefa |
| lightslategray | #778899 |
| lightsteelblue | #b0c4de |
| lightyellow | #ffffe0 |
| lime | #00ff00 |
| limegreen | #32cd32 |
| linen | #faf0e6 |
| magenta | #ff00ff |
| maroon | #800000 |
| mediumaquamarine | #66cdaa |
| mediumblue | #0000cd |
| mediumorchid | #ba55d3 |
| mediumpurple | #9370db |
| mediumseagreen | #3cb371 |
| mediumslateblue | #7b68ee |
| mediumspringgreen | #00fa9a |
| mediumturquoise | #48d1cc |
| mediumvioletred | #c71585 |
| midnightblue | #191970 |
| mintcream | #f5fffa |
| mistyrose | #ffe4e1 |
| moccasin | #ffe4b5 |
| navajowhite | #ffdead |
| navy | #000080 |
| oldlace | #fdf5e6 |
| olive | #808000 |
| olivedrab | #6b8e23 |
| orange | #ffa500 |
| orangered | #ff4500 |
| orchid | #da70d6 |
| palegoldenrod | #eee8aa |
| palegreen | #98fb98 |
| paleturquoise | #afeeee |
| palevioletred | #db7093 |
| papayawhip | #ffefd5 |
| peachpuff | #ffdab9 |
| peru | #cd853f |
| pink | #ffc0cb |
| plum | #dda0dd |
| powderblue | #b0e0e6 |
| purple | #800080 |
| red | #ff0000 |
| rosybrown | #bc8f8f |
| royalblue | #4169e1 |
| saddlebrown | #8b4513 |
| salmon | #fa8072 |
| sandybrown | #f4a460 |
| seagreen | #2e8b57 |
| seashell | #fff5ee |
| sienna | #a0522d |
| silver | #c0c0c0 |
| skyblue | #87ceeb |
| slateblue | #6a5acd |
| slategray | #708090 |
| snow | #fffafa |
| springgreen | #00ff7f |
| steelblue | #4682b4 |
| tan | #d2b48c |
| teal | #008080 |
| thistle | #d8bfd8 |
| tomato | #ff6347 |
| turquoise | #40e0d0 |
| violet | #ee82ee |
| wheat | #f5deb3 |
| white | #ffffff |
| whitesmoke | #f5f5f5 |
| yellow | #ffff00 |
| yellowgreen | #9acd32 |