Interesting paint scheme, I haven't seen that one before. I really like how the brown saddle mirrors the head-tube. I also appreciate the upright bars idea for city riding, but to me the black stands out too much and I'm not sure the straight bar fits in with the overall look of the bike either. What about a classic french city bar like these?
A vintage French chainguard might be fun too, since your running it as a singlespeed.