This is the bestiary for Realms of Quest III, an upcoming D&D-type role-playing game for the Commodore VIC-20.
Technical information: Each monster was done in an enlarged software-based "character graphics" mode, 20x40 resolution, double-wide pixels (approximately the width of C64 pixels). The VIC-20 has sixteen colors total, but only four were available four each monster. And of those, two are consistent across every monster: black and yellow. For the other two: one color from 0-15 is selectable for color 1, and one color from 0-8 is selectable for color 2.
VIC-20 Palette: http://upload.wikimedia.org/wikipedia/commons/b/b8/CommodoreVIC20_palette.png
RQ3 Info is available here.