Yes, I've done my EVO II a yellow tinted colour - I like it!
Get a bucket of boiling water, tip your dye in (I used Dylon), obviously more dye and more heat/time in pocket means darker shade. Stick your parts in the bucket and stir them round for about 10 minutes. Don't let them rest in the bucket or they go blotchy.
Take them out, rinse them, dry and put back together - new coloured hopper.
I'd post a pic but my brother has the digicam and the only camera I have is one on my phone!
BTW - Don't do the dye process indoors or you'll get funny coloured walls and ceilings