OK, this is a little shallow
Shallow? Not at all! This from the man who -- having (re)sprayed his tandem could not find matching bottle cages and racks in just the same shade of Mercedes-Benz Glasurit red -- decided the only route was to paint 'em to match. Result was all-red with black and silver components and frame transfers.
Black is so much easier! Even so, my Nomad has some silver (transfers, rim sidewalls, spokes) and there's touches of red, for a total of three colors. Black is still the dominant theme, to the point of appearing monochromatic.
I would go with black for the bottle cages as Andre suggests to avoid too many colors. A bicycle isn't a huge canvas, and too many disparate colors can come to look too 'busy". I would also go with black handlebar tape to match a black saddle or a truly matching brown if you stay with the brown saddle.
In general, I prefer
no more than four different colors on a bike: Black and silver for components, then the color of the frame either self-colored (a single, uniform color) or with contrasting bands/transfers. My fav'rite blue rando bike is in two shades of blue with black and silver components. Another of my rando bikes is pearlized maroon with silver/chrome components, and creme lettering with brown saddle and handlebars. Both came out okay, but I wouldn't want to introduce yet another color.
Lovely, lovely bike you have there, no matter the colors.
All the best,
Dan.
