Re: What color to paint sides of hung canvas?
There is no acrylic house paint - it's all latex - and I can't recommend using it as underpainting stuff, not even with acrylic on top - there's a good chance, very good, that it would peel right off the canvas.
I paint my edges with either a color or the picture wrapped around. I like the effect better and I hate framing anything. I'm not too cheap. I'm completely cheap - and usually too broke to frame all of my paintings. I want to use the money for paint!! Let the buyer buy the frame - it's my experience that trying to pick out a nice frame only gets you someone who says "i think i'd like it in a green frame better". You can't win with that - AND there's a lot of people who buy art for the color of the frame (to match the couch, etc.).
Keep swinging that brush!