To dream of painting a house or room represent a change of intention or feeling. A situation is being purposely changed. It may also reflect a purposeful change of mindset.
To dream of a picture represents an accomplishment you want to be noticed for. You want to be recognized for something you are doing.
Example: A man dreamed of being shown a picture . In waking life it was Veteran’s Day. The painting reflected the accomplishment of fighting a war that Veterans day makes people notice.
Example 2: A man dreamed of seeing a room being white. In waking life a personal problem was being completely removed from his life. The white paint of the room reflected his personality being purified of the problem as change occurred in his life.