What's the best background wall tile for pixel art?

I'd like to paint a pixel art mural using the Paint Roller. I would like to use a background with the least amount of texture "noise" so the colors of the pixel art stands out the most. To illustrate, here are several pre-hardmode background tiles painted sky blue:

(cactus, dirt, mahogany, bone, mushroom, stone, wood)

Based on this limited sample, dirt walls out of everything seem to do alright:

However this is not even close to all available walls in the game. Which wall is the most plain and makes colors the most vibrant?

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3 Answers

I would take a look at Sails, sold from the pirate.

Or possibly Boreal Wood Walls

If you are not gathering mats you may want too look at Gem Walls, and Hardmode Ore Walls.

Terraria Wiki on Walls

Wood has little noise. I'd suggest that.

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Gemspark wall is known to be the flattest coloured wall in terraria. I'd check it out. It does have a very obvious downside

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