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15 | 15 | case-insensitive); |
16 | 16 | * a string representation of a float value in ``[0, 1]`` inclusive for gray |
17 | 17 | level (e.g., ``'0.5'``); |
18 | | -* one of ``{'b', 'g', 'r', 'c', 'm', 'y', 'k', 'w'}``, they are the single |
19 | | - character short-hand notations for blue, green, red, cyan, magenta, yellow, |
20 | | - black, and white. |
| 18 | +* one of the characters ``{'b', 'g', 'r', 'c', 'm', 'y', 'k', 'w'}``, which |
| 19 | + are short-hand notations for shades of blue, green, red, cyan, magenta, |
| 20 | + yellow, black, and white. Note that the colors ``'g', 'c', 'm', 'y'`` do not |
| 21 | + coincide with the X11/CSS4 colors. Their particular shades were chosen for |
| 22 | + better visibility of colored lines against typical backgrounds. |
21 | 23 | * a X11/CSS4 color name (case-insensitive); |
22 | 24 | * a name from the `xkcd color survey`_, prefixed with ``'xkcd:'`` (e.g., |
23 | 25 | ``'xkcd:sky blue'``; case insensitive); |
|