gouache paints -- they are opaque; you can paint a surface blue, let it dry, then paint over it with red and not get purple. Otherwise, this blogger says it behaves a lot like watercolors.
Learn how to create gouache painting the easy way using this tutorial by Zakkiya hamza of Inkstruck Studio.
A gouache painting I did last weekend in Sesimbra village.
GrizandNorm Happy Tuesday! Gouache is one of my favorite media to work with. I’m planning to post some gouache paintings this week and I thought I should share with you my set up. ... - Griz
I just went out and bought some gouache paints. I love the ease of watercolour but am looking for greater opacity so hopefully gouache will be a winner for me.
Jesse Winchester Schmidt More
Moody gouache paintings of legendary interiors by Jeremiah Goodman Tony Duquette’s living room
Lachlan Goudie | Le Salon, Gouache On Board, 25x33cm | Detail