Joseph Turner painted "Rain, Steam and Speed – The Great Western Railway" when he was in his late 60's and was developing cataracts. When cataracts form the lens turns yellow. Blue and green colours are absorbed by the yellow lens, don't pass through it and aren't seen well. This famous Turner picture hanging in the National Gallery is mainly in browns, oranges and yellows.
Pauline isn't a famous painter but click here to hear her talk about how wonderful the colours are after cataract removal and replacement with a clear, new lens, or click here to read more about cataracts.