What is the color code for CAN Bus?
CAN does not have a formalized physical-layer specification for conductor colors, or things like connector type or pin-out.  There are common practices (like using a 9-pin D-sub connector) but no official standard.

Vehicles these days also tend to have multiple CAN buses, so colors will, of course, vary to keep the different buses straight.  I have seen some buses adopt a solid color for CAN-L and a different color striped with the corresponding CAN-L color for CAN-H, to give a visual impression of belonging together.

Overall, as long as you keep track of your conductor colors and pinouts, you can use any color scheme that suits your preference without violating any standards.