Thanks Punisher.

I actually like the silver instead of the white better, but I wanted to see if using white paint would make the shell lighter. Indeed it seems it does: my 190mm shell (orange/silver) weighs 108 grams and my 200mm shell (orange/white) weighs 106 gramms. Quite a saving taking into account that the 200mm shell is a lot bigger.

Cheers, Mark.