Cafe Red Artwork

I've started to become more observant in my surroundings when I go out, and noted a piece in a place called 'Cafe Red', that, obviously, uses red as the main theme for its interior.

I quite like this piece because of its simplicity. Not overcomplicated or too busy, just some simple line drawings with elements filled in red. I like the way the limited colour palette brings the whole composition together, especially with the red border round the outside.

The whole concept in general is something that I found quite intriguing, and would love to try something similar of my own. Perhaps using a different colour, and come up with some interior concepts etc?