Playing with colours

[imnotoriginal]

Has anyone else had some fun playing with the colours on their plastics? I've only just started doing it, more for fun than anything else. I've managed to get a nice colour pink on what was a white manns shad by putting it in with the bright pink ones. I've also had one of my pearl green watermelon berkleys go a funny colour after a short time in the same area. Pics below. I'm thinking the next challenge will be to get some of the casper clear berkleys and get them closer to the light purple colour ones I can't seem to find these days.
Joel