Just an FYI. I was in a Walmart and found a new toy. This is a Hot Wheels brand toy. It is a matchbox size Evo X; that does color to color transformations. Was $3.
This one changes from a reddish color to a yellowish color when you run it under cold or hot water. Leave it at room temp and it stays the last color. I put it in the freezer to see if it was temp or water. It only works with water.
Tom

 

my brother got a hotwheels gg evo x in his stocking for christmas it was funny

 

I have an EB evo X- one in pkg and one for my son to play with- great fun! My sister when she turned 16 wanted a Mazda Miata, so my parents got her a Hot wheels red Miata.