(used of color) artificially produced; not natural; "a bleached blonde"
In order to get some colors, some beads may be dyed. Especialy Bright pinks and bright purples are dyed. Some dyed beads will fade, some will not.
Usually bright pinks & purples. Over-dyed with color, therefore the color is not in the glass and can rub off. Clear nail polish my help prolong color.