I know this isn't chicken, but I know a lot of you have different hobbies and skills. I need some help. I have an old, oblong bowl, on feet, that is a greenish/blue. With very nice designs in the glass. But I see that the greenish/blue color is chipping off in a couple small places, so apparently it is painted on, instead of the color of the glass. (I have seen this happen on some of the cheap reproductions of the beautiful red glass, which the real stuff is colored with gold dust, I am told.) My question--does anyone know something that would take this greenish color off the glass bowl? The designs in the glass are pretty enough that it would also be pretty as a clear glass bowl. Thanks for any help.