when you add the acetone to your hot water, the acetone lowers the boiling temp and for a little bit the water will start boiling.  this is pretty cool to watch, but consider that everything splashing out of that bubbling colored bath is acetone/rit mixture.  you can stain your countertop forever, or burn your flesh from the acetone. 

acetone is highly toxic stuff, its so much better to do this sort of thing outside if you're able.  at least have air movement and a way to exhaust the room you're in (exhaust outside, not just spread it around), and you should think about wearing a mask. 

maybe i'm just overly cautious though.  had an relative get a brain tumor, she was a painter and used acetone a lot (super cheap stuff too) and there was always speculation it was exposure to the acetone numerous times a day. 

at the least, cover up the area you are working in.  it's nearly impossible to get that stuff out of surfaces once it penetrates, and with the acetone you've created a mixture which by its nature breaks down the surface and penetrates the molecular structure of plastics.  it can eat surface finishes, stain tile in a heartbeat, even discolor porcelain unless you bleach it out really well afterwards (found that out).

And I think I was trying to dye this one blue but I used the darkest blue and it came out an awesome black color:

but, yes, will work fine.  it helps avoid clumping of the powder too.  they cost more though, from what i remember...

I saw a green gameboy that Kitsch dyed and it looked great. I've been wanting to try that as well, but I can't find any green dye.

I have green to try soon. I really want a green gameboy, I hope it works out.

Probably this weekend sometime.

I use acetone on this one as well. It helps, but too many people over do it.

Yellow/orange dye very well. I know blue and black don't however.

I'll be trying pink next, if I can find some pink dye. Or maybe I'll try mixing red and white.

Actually...Hmm... I'm going to try this now...

I'll be back in 20 minutes.

*edit*

Didn't work. Bwahaha.

And don't use any acetone. The plastic doesn't need it. Every dyed DMG I see has white acetone burns in it.
I think the acetone method is more ideal for very glossy plastic that can't absorb the dye.