Well, in my experience, even if you are looking at a stained glass window from the inside on the sunniest of days there's still a muted quality to it. I mean, the end result is filtered natural light... In a lot of art I see that tries to replicate the stained glass effect, the artists tend to go too bright/brilliant with the color and it just doesn't capture the mood in the same way. You, on the other hand, whether intentionally or not, have and I think it's wonderful.