They do seem to be yellower than they should be for that amount of bud development (not very far into flowering). You want to slow down that process and let the buds sort of catch up.

Does your bloom fert contain any N at all?

If not, I might consider switching to one that has some- not as much as a grow fert, obviously, that would be bad, but just enough to slow down the yellowing process a bit.

You should be all right if you do that.