My lawn has been looking worst and worst lately. I figured it was the drought and wind stress but I looked closer today and found most of the turf has purple blades! At first I thought it was gray leaf spot, but if you look closely, there are no light colored spots within the purple. I have a couple of ideas what it may be, but I've searched and searched and can't find anything about this symptom!

Here is a link that might be useful: pics of turf