A nice additional feature for kuler would be to assign a
"proportion" to a colour, or to be able to re-arrange the colours
into nested blocks of different sizes.
The purpose behind this is that a colour scheme isn't just
about "what colours" to use, but how to use those colours. It would
be beneficial to communicate how a colour is supposed to be used
(as a background, for text, used as a block element on top of