I have just received a new prototype in WSF for a lampshade that i am quite excited about. It is a fairly big object and i assume the WSF will discolour quite easily when it starts collecting dust. Does anyone have experience with sealing WSF against dust without it necessarily turning into a glossy object? i like the matt finish the WSF has and would like to keep it in a similar way. Also, this finish would need to be fairly heat resistant and not discolour or crack when the lampshade is heating up from the lightbulb. Any advice would be appreciated. Thanks everyone.