I think the BB phenomenon will fizzle out pretty quickly. Originally developed to use following cosmetic procedures, I think every cosmetics company from high end to high street, has jumped on the bandwagon.
I've found them either orange, too shiny or (the Dr Jart+) one, grey and death mask-ish. I've returned to my SPF 50 and Dior Nude Skin with blush. Far simpler!
Sorry, bit of a rant and I think you're probably using it correctly, it's just that they're not that good.