Meeples are manufactured in a variety colors, whether you need to replace a lost meeple or desire to purchase a set in a non-traditional color.
Basic meeples come in three sizes:
12 mm (Travel Carcassonne)
16 mm (Standard)
19 mm (Mega Meeple)
Entire Carcassonne sets of 14 meeples (8 Meeples, 1 MegaMeeple, 1 Builder, 1 Pig, 1 Mayor, 1 Cart, 1 Barn) are also available, albeit in limited colors.
For the exact color options available, please consult the Meeple Source website directly.