For years, you have listened to me complain that I have too many acrylics and that I have yet to bond with them (no pun intended). Well, I may have just inched forward to a closer relationship with an "acrylic" medium. Acryl Gouache. A compromise between acrylic and gouache.
Traditional gouache is opaque, matte watercolour – so like watercolour it is re-soluble, not water resistant. Acryl Gouache has characteristics of both acrylic and watercolor. It is opaque and matte, quick-drying, water-mixable and water resistant once dry (so multiple layers can be over-painted with no bleeding or streaking).
I love the matte look of gouache and I love the water-resistant-once-dry attribute of acrylic. I tried Acryl Gouache recently when reworking an old pastel painting.
I mixed acryl gouache into a dark blue/green color and indicated a new scene based on the little black and white photo reference.
Then using a very light blue (mostly white) I indicated the lightest areas.
Using these colors, I applied pastel over the acryl gouache.