Second of the four, for June!
Works well with:
> Scenes with blue, as it's converted to purple/pink-ish for more of an obsidian look!
> Bright scenes, most of my colourings tend to just pop right on brighter scenes.
To avoid:
> Dark lit scenes, it can work, but like most colourings, there isn't actually much base colouring in the scene for this to affect.
> Heavy red-focused scenes, it will maybe look too red/purple-ish for your liking, but you could play with a colour balance to try and neutralize it a little!
Requires new blue!