Hi Jim,I have a love-hate relationship with the blue-gold polarizer. Rarely do I get the result I'd like. I've concluded that it must be used very sparingly and suits a very limited number of situations. You seem to have found one here, this is a very good outcome. I spoke to Darwin in the course of our workshop last February, since I've noticed he uses the blue-gold polarizer from time to time. He didn't have much to tell me; perhaps he hasn't found great success with it either. I think I'll post one of my rare successes with it on my blog site. Watch for it.