I think it would look good, Whatever you like. It's your bike. My personal preference would be to accent with a colour in the frame decal or use a complimentary colour. I like brown, clothing, bags, leather etc... so I am biased...
I would lose the blue bottle cage and put dark brown saddle and tape on it to compliment the yellow and orange.
A white saddle would look good too as it would go with the pearl tape, white hoods and white or pearl cable housing (i can't tell what colour).