I think this question is really dumb but anyway

Does pickup covers change your tone? Not even a little bit?
I find with them off. The pickups sound alittle brighter.
Epiphone Elitist Les Paul Custom WCR and Dimarzio equipped
Marshall 2266 Vintage Modern
Marshall 1960TV
Dunlop Crybaby From Hell
Actually my guit tech toke them off for me but I didn't play my guitar for a while caus it was at the tech's place and I couldn't see the change I'm wondering

what will it change if I put them back on