For this objective, I made a whole bunch of solid texture materials, including checkerboard and several Perlin Noise-generated textures, which are all callable from the LUA interface.

Checkerboard texture

Perlin Noise with Linear Interpolation

Perlin Noise with Cosine Interpolation

Perlin Wavy Texture, Noise Multiplier of 1

Perlin Wavy Texture, Noise Multiplier of 5

Perlin Wavy Texture, Noise Multiplier of 10

Perlin Wood Texture with weird colours

Perlin Wood Texture with better wood-like colours

Perlin Marble Texture

Venus De Milo mesh with Perlin Marble Texture