As someone who draws and colors a lot of humanized ponies, this has always be a point of personal confusion for me. When Aloe and Lotus are humanized I always identify with the pink haired one more as Aloe, and the blue haired one as Lotus, even though technically it should be the other way around.
 
Should an exception be made for these two in how fanon treats their humanized hair color? It seems kind of like a can of worms to me because it’s less accurate, but at the same time I don’t know how else you can avoid mixing them up since Aloe is predominantly pink and Lotus is predominantly blue.