we just have little red flags on either side of the lip at sunday river. and sugarloaf i dont think had any lines when i was there last week, but they did toss out some evergreen on the landings which was nice.
You want something that's cheap and lasts long... let me share something with you. Go buy a 2 toilet bowl cleaning tabs... they'll last for the whole season and paint your takeoffs a beatiful blue color. That's what we use. Gauranteed for 3000 flushes!
they have sprinklers on the lips of the jumps burried a little bit, and they shoot out gasoline so at the begining of the day the park crew casually lights it with a match.
i've never even taken into account what colour the lips are, but i believe blue, and at another they're red. all features are marked with some sort of poles telling you the size of the feature too.