Custom Color Palettes
Half the fun in making a mosaic is choosing which colors to use. Generally,
a small selection of colors is what will look best -- but you get to be the
judge. Choosing well-balanced small palettes can be challenging, but it can
also be a lot of fun. Here are some examples:
Original image...
Mosaic variations...
 2 colors
| |  2 colors
| |  3 colors
|
|  3 colors
| |  4 colors
| |  5 colors
|
|  7 colors
| |  20 colors
| |  35 colors
|
When selecting colors, less is often more. The best colors are also usually
those which fall close to the ones most commonly seen in your original image.
Of course, it can also be fun to try out wild and crazy palettes, for
example:
 3 colors
| |  4 colors
| |  5 colors
|
(The above are made with apologies to Botticelli!)
|