TL;DR: Making a new game but the background sucks, looking for ideas for the background or just the game in general.

I'm working on a new game (screenshot below) and I wanted to share my progress. The goal is to release it on steam when it's fully done but I'm not 100% sure if I'll be able to do that. The screenshot below shows the first room I've created for the game. It's supposed to be a party with those hand guys, but I'm having problems with making the background look good. The background flickers between yellow and blue for the individual tiles, but It's a bit of an eye sore and looks bad. The goal for the game is a trippy 2D walking simulator game inspired by LSD dream emulator. My main problems with this area as of now are that it's a little too bright, cluttered, and empty. If anybody has any redesign ideas for this room, or ideas for other rooms, NPCs, and other features I would be happy to hear them.