Background implications

Solid color backgrounds should imply simple background, as a background with only one solid color is simple.

white background → simple background
grey background → simple background
blue background → simple background
pink background → simple background
purple background → simple background
yellow background → simple background
green background → simple background
red background → simple background
black background → simple background
beige background → simple background
orange background → simple background
brown background → simple background

No background at all is also a simple background.

transparent background → simple background

I'm not sure these are useful tags at all.

@Sonata Dusk

I mean, they've existed for a while, I've just been trying to clean them up. Most boorus I've seen have them (like Derpibooru for example) — it's not like color body part tags, something like background color is a big aspect of the image and if you're looking for a specific image you remember, it can be a piece of the puzzle.

Also, simple background is helpful if you're looking for images with a solid flat background that can easily be removed.

For now I'm closing this one without the assocations. There are too many examples of images with certain color themes that aren't 'simple'.