I am literally doing a dye job as I type this. I've found a few more things:
1) The rockets on the Ghost Hawk 2 do not take to dye. I've seen this a few times in the past on some figures and vehicles.
2) The new G.I. Joe movie figures don't take to dye either, or at least not Royal Blue. I wanted to take a Cobra Parachute figure and dye him a darker shade of Blue. Nothing took the dye at all. I'm use to legs legs and arms going darker then the bodies of figures, but nothing at all took. Then again nothing took to the Royal Blue dye, not even chrome and chrome LOVES rit dye.
3) Transformers are a total mix bag. I bought a spare transformers generations thundercracker and wanted to dye him black to make a Skywarp and I'm having some interesting results. The silver body looks bronze, some of the parts went nice and black and others are not as black as I would like. Maybe I'll take pictures later.
Just remember, it's easy to warp plastic when you do this. The best results I've had is boil the water in a large pot, turn the burner to a low setting, let the water cool a bit, then add the dye. If you add the dye while the water is still heating you might have the water boil over. It happened to me last year when working on the Joe Canuck stuff. It was a HUGE mess.
That and keep your parts moving. You don't want a full pot with pieces pressed to the bottom of the pot. Also, buy some latex gloves.
