Share 'what I learned about the rosin and strings.'

I heard somewhere that you should use a light colored rosin in the summer and this weekend I learned why. I was playing an outdoor gig, fiddling away with my music partner (harmonica and guitar). I couldn't find my regular rosin but I found a piece of really dark rosin in an old fiddle case so I took it with. After some fiddling I got out my rosin and stroked my bow over it. I have gut core strin…