Can you be more specific about what you mean when you say “design for the walls”? Do you mean you need help with designing the room’s feel and furniture layout in general? As for the paint, you should be able to take one of the tiles to a paint store to have it color matched.

Design the walls like would something like this look nice to our wall or something. We did do that the color match and it was too dark.the last picture was the actual color we color matched from the tiles

You may want to save rooms you admire in an idea book so we can get a sense of your overall style. Let us know what the purpose of the room is. Will there be a TV, do you already have furniture, art, do you want a rug? The more information we have the better any suggestions will be.

I agree we for sure need to know what this space is .IMo the tiles are busy so I would not be inclined to add another level of busy on the walls just art . But I need more info.

You could keep the walls as is and go deeper on the draperies and some furniture. I think dressing the front window as shown would make a huge difference to the short wall. Hang drapes as high as you can; include, to the floor, semi-sheers.

Use art to give walls a different dimension.