KaperC wrote: There's also the question of which glaze/color is dominant. Ask me how I know! Some glazes (and colors) will recede - or be "trumped" as our teacher calls it - by others. Remember my lizard mushroom? I used Stroke & Coat glazes on that - I really wanted the stripe and yellow dots down the back and the spots on the toes to stand out, but they didn't, even though I really piled it on. The dark glaze underneath trumped those colors. Even the body of the lizard doesn't 'sit' on top of the background. If I had done it in separate firings, maybe it would have worked?
OTOH, if I had used a Series 2000 on the background, the Stroke & Coats would have trumped, because they are opaque, while 2000 is semi-translucent. I've had this happen with other glazes - they just ended up 'muddy.'
I get really confused with under- and overglazes, because I haven't used them yet.