Hi guys!
This is my first post. I’m in the process of learning shader programming and I’m working on an image effect that restricts the color space as well as (if you so wish) lowers the resolution of an image. I just want to show you guys what it can do, because I think it’s kind of cool.

I actually didn’t mean to post this as a thread, but as a post in the “small works”-thread. Please delete/destroy/move if necessary. 
Do you have a scene where you can upload the picture to Unity to create this effect?
Color value divided by 64, floored, then multiplied by 64, for a 2-bit result? 
That’s a good idea. I will probably do that soonish.
What the shader does is actually to calculate the distance in the RGB cube from the original pixel color to a number of user-defined colors and then it picks the closest one. I have experimented with some math operations, but I decided to go with this algorithm, which is slower but gives more control.
Added a demo video to original post.