Wizard Justice - Greyscale shader

When working on graphics I often view it in greyscale which makes it easier to see contrasts, e.g. backgrounds should have less contrast.
I toggle a greyscale shader on/off when testing art in-game.

(If you take screenshots from Metal Slug or Lomax and convert them to greyscale then you'll see great examples of how there's less contrast in backgrounds.)

Wizard Justice is a 2d platformer game currently in development.

Download demo here:
https://gojoentertainment.itch.io/wizardjustice