Sponge sculpture different primary colors - will it look okay? We just have the carpet replaced surrounded by our playroom, and it...

We just have the carpet replaced surrounded by our playroom, and it is mainly beige-ish, next to strands of primary colors throughout (red, blue, green, yellow, ginger, etc). My original thought be to splatter paint one wall with primary colors, but I've kinda granted against that because of the mess and I'm also worried it will leave a texture on the wall that will be intricate to paint over and hide within the future.

So, in a minute I am thinking about sponge fine art in a mixture of primary colors on one wall (the main wall - the one you see when you first enter the room), and next possibly painting the other three walls a solid primary color (different color for respectively wall).

Does that sound resembling it would look good? I'm trying to find something that will clear the playroom look playful.
Answers:    I think you should not do the spnge entry... I don't think it will slightly work. But what about fine art the main wall solid ashen, let it completely dry... after using other colors, paint circles on the walls in adjectives sizes!!! That would be fun!! Then the other walls could be one color of one of the circles.. like green!
I don't assume I would like the looks of the primary colors together, I cogitate it would look sort of pukey, sorry. I like the thought of the four individual walls, or doing them in shades of the different colors. (Blues, reds yellows greens.)Try your plan on one wall and see what you reckon, it is not my playroom, so it doesnt matter what I imagine.