I have many hours in Citations and the coding there for toggles was white for all lights, green for de/anti-ice (pitot heat, etc). In my -10, I use red for Master, Alternator and Backup Battery; yellow for Radio Master and Autopilot Cut-off (main electrical supply) switch; white for all my lighting, green for pitot heat; blue for boost pump.
It's what works for me. My toggle labels are located under my switches and unlit, so the color is what I see, not the label. YMMV