Applying multiple colors to a grouping of S-tiles

[banana]

Hello,

Attached is a picture of the sketchup model of s-tile.
There is a lot of s-tile on this building and I was wondering if there is a way to apply various colors randomly quickly.
The way I added the colors to the model shown was simply going into the group and manually added colors randomly.

Banana

[Box]

Tig has two plugins over at sketchucation that might sort you out. From memory, Random Select and Texture Randomizer.