Hi,
It is almost that : as a matter of fact, i shot an advertisement for a perfume, it is a photograph of a poster which is on the wall of a cosmetic shop in Paris. It is interesting because we don't know what we are looking at : is it a poster ? is it a window ? are we seeing a real point of view ? Are we in or out ? Red and gold colors of the frame are very theater-like.
To get deeper and richer colors, i have a trick : i use a black-and-white layer in Photoshop, in Multiply mode, with 30 % fill. It's usefull to get patina and "older" colors.
Thanks for all your comments.