Dark Home Theater . Deep gray should be coated multiple times on the wall to get the deepest possible shade. But with black paint, touch ups would likely rarely be needed. 21 Incredible Home Theater Design Ideas & Decor (Pictures) Designing Idea from designingidea.com I believe an indigo, deep forest green, dark brown or deep maroon work well. But with black paint, touch ups would likely rarely be needed. For the rest of the walls and ceiling, it’s best to go with a neutral dark color.