I've been banging my head against the wall

looking for someone who carries 9/16" t-molding in black, or in fact, anything other than white. I'm converting an old DK upright - NOT restoring - and everyone just seems to carry the white in that size. Anyone know any other options besides t-molding.com?
I saw t-mold.com mentioned in Saint's book, saw that they had it in black, and got really excited until I realized the site basically had no functionality and the guy got lambasted on these forums for trying to deceptively advertise his stuff here. I can't even find contact info for him now, anyway.
Has anyone else had this problem and substituted 5/8"? Would using 5/8" make it stick out enough on either side of the panel to bother me? Or is 1/32" on each side not enough to be really noticeable? I'd really prefer not to do it in white.