Recent content by Tommy_P

Thanks, B0b-A! I had a hunch these paints do exist. The only problem, they react to UV, so won't work indoors. Also this will probably work differently on a sunny day vs an overcast day. That's why initially I was hoping to find an oxidizing dye, because the % of oxygen is always about the same...

Hi, everybody. So no answers... which means there's no such thing? Well, is there any other method to achieve a similar color-changing effect? I'm thinking Transitions lenses that react to UV. It is different from what I'm after in several aspects: 1. Doesn't work indoors 2. Reversible and...

Hi, I wonder if there is a material or paint/dye that would change color when exposed to air? Ideally, it should have the following properties: White-to-black, black-to-white, or any other high contrast color transition (e.g, yellow-to-brown would work too) Works under normal conditions...