Euro Truck Simulator 2
For all trucks & trailers we use paintjob named Sunrise with 3 colors: dark blue, darker green and light blue.
For trailers that support this paintjob try to use similar color scheme. Trailers/vehicles that only have single color support, use the topmost color of dark blue
Here you can see the repaint in the paint menu and order of colors for the Sunrise paint.
We used have a Heavy Duty version as official repaint also, but I dropped that to choose a paint that is available to everybody and is shown to everybody on multiplayer also.
American Truck Simulator
For all trucks we use paintjob named Dividedand trailers use paintjob named Swift with same color scheme logic as ETS: Dark blue as topmost color, middle color lighter shade of blue, bottom color darker green (see color palette choices in ETS section)
Here you can see the order of these colors for the named paintjobs:
