Generally, plan to use the white pads for the last polishing steps.
They might or might not be aggressive enough to remove marring, but they'll remove MICROmarring from more aggressive products and pads.
While some people get a ready-to-wax finish from yellow and orange pads, it's not something you can always count on. Plenty of us even finish up with a VERY mild product on a FINISHING pad. The more "milder, then milder still" steps, the finer your finish will be.