The colour computed for topic dots and put into cinera_topics.css in HSL
format has its lightness value modified depending on whether it's on a
dark or light background. Web browsers do not tell us an element's
computed colour in HSL format, but in RGB, so we would need to convert
it from RGB to HSL when setting the lightness. Previously, this
conversion was busted, calculating too small a value for the saturation.
This commit obviates the need for any RGB→HSL conversion by writing the
hue and saturation values as attributes to the elements, which the
function responsible for setting the lightness may use directly.
Matt Mascarenhas
213bb2f882
