I appreciate your reply - and in answer to it, no, both "lights" provide different "effects", and one doesn't really drown out the other.
I'm pleased to hear you say I'd still get some light... I saw some blue dust filters from a company called AC Ryan that I tried to buy but couldn't find in stock. Not as nice as the BitsPower, but I will keep trying, as they have 80 and 120 mm versions, so they'd "match". (I know - more vanity.)