Names for colours. Names taken from SVG 1.1 specification, http://www.w3.org/TR/SVG11/types.html#ColorKeywords.
readColourName
takes a string naming a colour (must be all lowercase)
and returns the colour.
Fails if the name is not recognized.
Documentation
antiquewhite :: (Ord a, Floating a) => Colour aSource
aquamarine :: (Ord a, Floating a) => Colour aSource
blanchedalmond :: (Ord a, Floating a) => Colour aSource
blueviolet :: (Ord a, Floating a) => Colour aSource
chartreuse :: (Ord a, Floating a) => Colour aSource
cornflowerblue :: (Ord a, Floating a) => Colour aSource
darkgoldenrod :: (Ord a, Floating a) => Colour aSource
darkmagenta :: (Ord a, Floating a) => Colour aSource
darkolivegreen :: (Ord a, Floating a) => Colour aSource
darkorange :: (Ord a, Floating a) => Colour aSource
darkorchid :: (Ord a, Floating a) => Colour aSource
darksalmon :: (Ord a, Floating a) => Colour aSource
darkseagreen :: (Ord a, Floating a) => Colour aSource
darkslateblue :: (Ord a, Floating a) => Colour aSource
darkslategray :: (Ord a, Floating a) => Colour aSource
darkslategrey :: (Ord a, Floating a) => Colour aSource
darkturquoise :: (Ord a, Floating a) => Colour aSource
darkviolet :: (Ord a, Floating a) => Colour aSource
deepskyblue :: (Ord a, Floating a) => Colour aSource
dodgerblue :: (Ord a, Floating a) => Colour aSource
floralwhite :: (Ord a, Floating a) => Colour aSource
forestgreen :: (Ord a, Floating a) => Colour aSource
ghostwhite :: (Ord a, Floating a) => Colour aSource
greenyellow :: (Ord a, Floating a) => Colour aSource
lavenderblush :: (Ord a, Floating a) => Colour aSource
lemonchiffon :: (Ord a, Floating a) => Colour aSource
lightcoral :: (Ord a, Floating a) => Colour aSource
lightgoldenrodyellow :: (Ord a, Floating a) => Colour aSource
lightgreen :: (Ord a, Floating a) => Colour aSource
lightsalmon :: (Ord a, Floating a) => Colour aSource
lightseagreen :: (Ord a, Floating a) => Colour aSource
lightskyblue :: (Ord a, Floating a) => Colour aSource
lightslategray :: (Ord a, Floating a) => Colour aSource
lightslategrey :: (Ord a, Floating a) => Colour aSource
lightsteelblue :: (Ord a, Floating a) => Colour aSource
lightyellow :: (Ord a, Floating a) => Colour aSource
mediumaquamarine :: (Ord a, Floating a) => Colour aSource
mediumblue :: (Ord a, Floating a) => Colour aSource
mediumorchid :: (Ord a, Floating a) => Colour aSource
mediumpurple :: (Ord a, Floating a) => Colour aSource
mediumseagreen :: (Ord a, Floating a) => Colour aSource
mediumslateblue :: (Ord a, Floating a) => Colour aSource
mediumspringgreen :: (Ord a, Floating a) => Colour aSource
mediumturquoise :: (Ord a, Floating a) => Colour aSource
mediumvioletred :: (Ord a, Floating a) => Colour aSource
midnightblue :: (Ord a, Floating a) => Colour aSource
navajowhite :: (Ord a, Floating a) => Colour aSource
palegoldenrod :: (Ord a, Floating a) => Colour aSource
paleturquoise :: (Ord a, Floating a) => Colour aSource
palevioletred :: (Ord a, Floating a) => Colour aSource
papayawhip :: (Ord a, Floating a) => Colour aSource
powderblue :: (Ord a, Floating a) => Colour aSource
saddlebrown :: (Ord a, Floating a) => Colour aSource
sandybrown :: (Ord a, Floating a) => Colour aSource
springgreen :: (Ord a, Floating a) => Colour aSource
whitesmoke :: (Ord a, Floating a) => Colour aSource
yellowgreen :: (Ord a, Floating a) => Colour aSource