I'm a refined kind of guy, but I'm also very good at diffusing light.

If you hold me in front of a lamp, I can show you what I mean straight away. Although I'm very bright, you can't see the lamp behind me.

I can even turn up in color for grand occasions - or in a different guise, as a tube.

I can also be pretty tough if need be.

If your designs incorporate light, I'm just the allrounder you require.

... Am I your type too?