Valerib. you have to keep both! The black is stunning! You won't want to give it up. It looks so chic in black with the shiny hardware. You are going to have to keep both. But if I had to give one up, and it would be tough, I'd give up the putty and keep black.
Munchkyn. The taupe is great w/blacks, reds, and I have a pair of taupe slacks w/a teal cashmere sweater (taupe heels) that I wear it with. Also, winter whites. The icy taupe is more of a f/w bag.
If torn between taupe, ivory, or black, I would get the black simply because it would go with everything.
I think they might be coming out with a blue for s/s. Their also coming out with a brown called cola that sounds interesting. You might call him, Rob at the Boston store and ask him. He's been very helpful.