I had the opportunity to play a custom Martin D-45 twelve string. It was my ex-girlfriend's dad's. Most beautiful guitar i've ever heard/seen. Unfortunately i had to give it back when we broke up...oh well.
OK here is the deal with the green fingers and build up thing. Its called acidic sweat.( or so i hear) and like 1 out of 3 guitarists have it. That is why some peoples fingers turn green and break strings quicker than others. Washing your hands before you play does help. As far as strings go i ...