I just used Adobe's Kuler for the first time. Really nice for
developing colour themes. Though I miss something. When I develop a
colour-theme I want to see the effect of the colours when used in
large and small scale. In other words: I want to adjust the width
of each bar, so i can preview how it would look when I would only
use a small amount of the colour. Furthermore i think the maximum
of five sufficient in most cases. However, I can't think of a
single reason for putting a maximum number of colours.