Moldable plastics

[Thalan the Exiled]

Don't know it is clear till you add the color pellets to it.

[Cire Yeldarb]

If I read the description correctly, I believe it is white by default until heated when it turns clear... I would assume after cooling again it would go back to white.

Look at the picture here: https://www.instamorph.com/ideas/ele...tom-nut-driver
It does go back to being white by default, but if it is thin enough it appears to be semi translucent

[darth_chasm]

I've never used instamorph but the stuff I have used works in this way.