it is normal for bb...i have a couple of blushing bride nin my garden...the blooms open up white with a pale blush (pink or blue)...then turn green...then to pink, maroon...then finally brown by late oct...my bb begins to bloom in late may, and if i let the blooms to hang on..that's the color chg sequence i notice from them...i sometimes deadhead the blooms in july - if i have time - then i get a second flush of blooms by end of aug...bb really a much better bloomer than endless summer, it literally blooms from late may to late oct for me in new jersey...the biggest downside for bb i found is the tendency of leggy growth, thus flopping blooms...but as far as reblooming flower power, bb is among the best i have grown...the green blooms are normal...