Prompted by JonR's question in another thread. He asked "if all the piano keys were white, how would a piano player find their way aound" ? My response....... So, why aren't the accidentals flagged on a guitar fretboard with a groovy marker of some kind ?? Now that would be a very useful thing to do with inlays, I'm thinking. Piano players have it easy with the black keys not only marking the sharps but also placing the b/c and e/f combinations etc. If a fretboard was marked similarly, we would all be able to effortlessly find the C scale and identify all our other noes using the sharps clusters etc. What a great teaching tool that would be. Really, we struggle uphill a bit trying to learn all the note placements with nothing to guide us. So, I know that violin is probably harder, but that has been proven in song to have a certain natural owner, so it does not count. It will make my life a lot easier learning the fretboard when I modify one of my guitars now I've had the brainwave.