This generator displays between 1 and 99 palettes from COLOURLovers at once. Think of it as a stream of palettes.

How to make a High-res Image for Prints

These steps deal with Photoshop for an important reason. Photoshop allows resizing using the "Nearest Neighbor" setting. It's necessary to keep the lines cripsy when resizing to a larger file. Other programs like Paint, Preview, and online image editors do not have this setting (GIMP may, I'm not sure).