>>1731680In the case of fade tape and similar, one of the two colors should match the saddle and the second just needs to be complimentary to the rest of the bike.
To expand on the theory a little, multicolor frames make this tricky, but most bikes have identifiable primary, secondary, and accent colors. The primary color is the main color on the frame, secondary is the color of the frame decals (and this is usually what you match your saddle and tape to). Accent color is what's on your seatpost, stem, drivetrain components, rims, and tires, and potentially on the frame decals - in this case you're usually limited to silver/grey/black (and black/tan for tires) and these should be more or less consistent across the bike or a 50/50 mix - typically you want these to contrast with the frame for a modern/racy bike, or to be complimentary for a vintage/classic bike.
>>1731682>>1731683>>1731685de gustibus non est disputandum
>>1731685go for it, you can always take them off if you find you're not using them
