I'm newer to fly fishing (about a year and loving it) and I've usually avoided overcast days (for no good reason other than it's cloudy). But recently I have seen and heard about people having success on overcast/rainy days. I'm hoping to get out this weekend on the Mid or Lower Provo and I'm curious what tips you have for cloudy days. Does fly selection differ from a sunny day? Are there better colors to use on dark days? Do fish behave differently on dark days? Anything helps! Thanks!