What's your favorite color?
you have so many options... it is--like stated above--similar to black pants!
You can go solid color jacket, and even all white outfit, or wild print jacket.
I do want to point out to the fact that white pants are tough to keep white if you're a hard core rider, or east coast--where walking in mud/dirt after riding is common!
Use the proper cleaning product when washing those pants if you want to preserve the waterproofability.