As I recall. sometimes the toggle had a white bouy and the main pot buoy was color coded; sometimes vice-versa; and sometimes both were color coded. Generally the pattern seemed to be "localized" rather than mixed.

We had two toggles that I pass "through" under sail. One at 7 knots plus and the other at about 4 knots. I saw both too late as the two buoys started to converge on our hull from opposite sides (said some unmentionably things about my stupidity, the ridiculous placement by the lobstermen, etc., etc.). In both cases as they submerged, our hull just stripped them and they bobbed up behind us. (Luck be a lady...)

I didn't hit any lines while motoring this years. In 13 years, our spurs have only cut lines twice. Once was a clean cut -- the other (in the middle of the Gulf of Maine) cut the line but left enough wrapping the shaft that we had a problem. We have Spurs on our 1.5" shaft in front of our two-bladed Max Prop. As Harlan Billings warned me: "If you think you're going to hit a line while motoring, don't slow down. You want the Spurs to cut the line cleanly. The waterman would prefer that to your dragging it or chopping both his toggle and rest of the 'chain' of pots."