[quote=@Sanity43217]
Which colours have been taken? 
[/quote]

Currently, these colors have been claimed: Red, Green, Pink, Blue, Black, Gold, Silver, and Copper. 

So feel free to use Yellow or Purple or White. Originally, I was going to save White as a power-up for Tommy, but since I've already claimed so many colors myself, I am just going to keep him Green.