I would trade your green collars and wrists for a good long collar, Most people with rim head dresses aren't looking for wrists, bad longs etc. It would make your offer more tempting since people are now saying rim head dresses are worth a black long and add.
I would, but everytime I try to trade them up, people ask for all my longs for a black long and then to ADD. I'd rather look for a fair trade here and hope for the best, even if it's a long shot. If I don't think anyone will ever accept, I'll marathon adventures for a black long. Thanks for your concern though.