If not then usually michaels has it as well. :)
I use rit all the time on all sorts of plastics for my RCs
a hobby shop!
you can also find it at safeway or local super market
Some art stores have it.
When i dyed parts on my 5b I used liquid rit dye becuase sometimes the powder can show up on the plastic parts. Cheers
go to michaels
I dont like squirrel but Jack is da man :)