I would play up the red and white.

Red wheels or spokes, red bell and red saddle bag (which I see you have).

Change your saddle to a white one or for unexpected pop, Terry has a Butterfly in pink and red.

Accessorize with bottle cages. If you introduce another color, then I would do what Muirenn said and make all the accessories that color though it should be a color that works well with red and white