CMYK colour chart

[Theunis de Jong]

Okay, already needs a fix :-(

Change the CMYK calculation lines to this order

m = 100*(v % steps)/(steps-1);
y = 100*Math.floor(v / steps)/(steps-1);
(...)
c = 100*(h % steps)/(steps-1);
k = 100*Math.floor(h / steps)/(steps-1);

to get the classical cyan/magenta block in the 'white' corner. To get increments of 20%, use a step value of 6 (0%, 20%, 40%, 60%, 80%, and 100% is six steps). The default '5' will show 25% increments.