I'm upgrading my saddle to a Brooks B17 or Velo-Orange #3, and my handlebars to a set of Trekker bars.
Here's what my bike "Clyde" looks like now:
Mostly black, with a brown/black saddle, brown/black grips, and some green flash stickers.
I could try to stick with the current color scheme, and get a honey or brown saddle, and then try to match bar tape with brown or tan.
Or I could stealth up the bike and get a black saddle, black bars, and black tape.
Or I could get a black saddle, black bars, and try to match the tape to the green accents.
What do you think?