A lot of people contacted me with the same question, so I think I'll just post the answer here:
Q: Does my room have to be freshly painted?
A: No. I'm accepting photos/descriptions of the rooms that were painted even years ago. The room can be fully furnished, decorated and lived in right now - as long as the condition is good, it looks nice and I can see the wall color in the photo (when you take a photo, make sure most of the room is in the shot, not just one wall).
I hope it's clearer now what I am looking for
Yelena