Is the color of come clear?
No, its usually white.
Both white and clear is normal.
It came about when Hollywood started making movies about it. There is no such thing as "black" magick, either is there "white" magick. Magick is the color of a clear cup of water (not, its not blue.) You put in dyes to make it whatever color you want, but the original "color" of the water was clear. Same concept for magick.