Glass and Mirrors - Stained Glass - changing the colors

I have a big stained glass window and I don't like some of the colors in the design. (burnt orange, bright green, purple!!) Can I paint over the colors? Can you use ornament paint from Michaels?
Thank you

Paint has been used to accent and 're-define' stained glass for a long, long time. Truth be told, stained glass in many famous landmark buildings all over the world has had to be re-defined due to pollution, acid rains, abrasive winds, excessive heat, and also to correct color flaws. Success stories equal horror stories so painting is very debatable.

The problem using paint is really only a concern with old stained glass ... that kind which was sliced from cylinders. Prior to more modern and controlled techniques of the 20th century glass was blown into cylinder shapes and then unrolled and or sliced while still hot.

Glass from this era is very porous. Extremely porous. Soot from fireplaces and oil or gas lamps usually if not always has impregnated the glass and redefined the original color.

Older glass expands at different rates than newer glass and it also expands in a much different less uniform manner. Painting radically affects the expansion process of the piece .... and that changed expansion affects the other pieces in the field.

If you decide to redefine - paint ... the glass must be very clean. You'll never get the old porous glass clean enough to paint. It's full of all that carbon from fires and from oil and gas lamps.

If you paint - you are drastically reducing the value. Lots of stained glass is valuable because of the colors and the imperfections in the glass - not the design. Design .... that's secondary.

IMHO don't paint. Use the colored static stick vinyl sheets.