I like onions–so much texture and the colors are strong but earthy, nothing too flashy. I used some Golden Open acrylics for this, mixed 4 to 1 with regular acrylics. Stayed pretty workable for the 45 minutes or so I painted, pretty much touch dry now, the next morning. Not the most opaque, powerful colors in the world, but that’s OK–I get a lot of enjoyment from experimenting with materials, and adapting to them, working with what you have and seeing what you can do with it. I’ll definitely play with these some more.