I have used a Luminoodle for camp lighting: https://powerpractical.com/products/...led-light-rope
These are powered by USB battery packs, so would require no CANBUS wiring - useable interior or exterior.
Some time after I bought my white-only lights, Power Practical came out with a selectable-color version.
With the colored version, one could buy two ropes - one to set to green, one red, for Christmastime. During other seasons, a sports fan could select his favorite team's colors. The colored sets cannot only select colors, but also have a dimmer.
I have used my own set, plus have given one each to my kids for car camping. No complaints from anyone.
My 5-foot white Luminoodle casts a fair amount of light. One probably could spend less by adapting some other Home Depot or Harbor Freight lights, also.
I also have a 12V cigar-lighter plug-in DC/AC converter, used for recharging a laptop. It has multiple outlets, so strings of lights could be used with that, too.