Enjoy your scaling adventures.
Not sure about your pollinator worries. If you're not raising lilium from seed you don't have to worry whether your bulbs will 'come back' the same colour or not - I can only think of one instance in which a clone produced a sport, and that one (Silver Scheherazade) is (in my opinion) even more beautiful than the original.
Seed-raised lilies though are new individuals and will display their own particular colour that may or may not be similar to the parents. The most frequent pollinator of lilies around here is the garden-variety hybridiser... and it leads to lots of colour instability in the lily population.
(Sorry I don't know what the most common insect pollinator is!)
If you do notice variations in colour from the same bulb from year to year it is probably environmental - temperature, soil pH and nutrients, light levels, and rain all have an impact. If you get streaking of flowers you might be looking at a disease. Always feel free to share pictures here and ask away. We'd love to see your lilies in bloom
