White tape or paint for emitter PCB? D4 white mod

Hello,

I would like to put something white on the PCB or at least behind the optic of the D4 so that it looks more white.

WHY? Looks only. No other reason.

I thought of paint, but I want to know if there’s a type recommended that won’t short or burn.

I thought of a material to put inside, but I’m not sure what. I am going to go to the dollar store and look around for something made out of thin white silicone, and see about carefully cutting it to size with craft knives and a stencil. But maybe people here have a better idea.

Budget ideas are most welcome, if there’s something that might be around the house already.

Thanks!

Heater paint.

Make a gasket. Or buy a glow-in-the-dark.