Sharon, I am HUGE into colors and playing and mixing… and love textures. I will try all the opaques with my Primateks to see what they do! And I promise I will get a video done soon on playing with Primateks.
I generally don’t like opaque because it comes off flat. But the opaque will suspend and drop differently into a Primatek. Look at the Ultramarine (left) dropped into Yavapei… see how it moves and changes? Same with the Sapmixed with Serpentine (which has quite a bit of brown that separates out) in the center. These are all transparent but you can see what happens.
When I get a Primatek I take a journal I am not fond of and make squares and play with all — or most — of my other colors. Below is Piemontite with a host of other colors, and mixing into the center I get to see how they shift mixed. Permanent Yellow (3d over on top) is semi opaque and look what it does!
So I bought MG Cobalt Teal because EVERYONE said it was a great color. It is. But it is also flat opaque… But mixed, wow!.
Here is a Lapis sky with no other color (and Lapis changes BTW with the batch…) just layers, tho I may have had a slightly dirty brush with the second layer… the sky is quite grey blue (BTW I also used diopside and yavapei and hematite in this one in trees and buildings):
Above is Cobalt Teal.. A bit muddy for me though it is a pretty color, and Lapis. Below is a sky with cobalt teal (opaque) dropped into Lapis, and a bit of Imperial purple at the edges… and the same imperial purple dropped into the Jadite or Diopside (I can’t remember). The cobalt sings with its brilliance!
Hope that helps…