RE: How do you change the colour of fletchings?
Just use an extra fine Sharpie permanent marker. They are the gray ones with the cap matching the color of the marker. When I test my hunting arrows I always number them from 1 to 4 for my quiver and use the sharpie. My buddy likes to write different stuff on the vanes of his arrow and he uses the shapie. Believe me, it won't come off.