> Colour-changing indoor paint?

Colour-changing indoor paint?

Posted at: 2014-09-26 
http://www.stardustcolors.co.uk/thermoch...

also http://www.colourchange.com/

Does anyone know if there are any brands that do colour changing paint? The stuff that is ideal for kids rooms because you put your hand on the wall for 3 seconds or so and it leaves behind a faint outline of your hand then fades after around 10 seconds back to the normal colour. I have a feeling it may be Dulux but I can't seem to find it on their website.

Thanks in advanced.