Was just browsing, curious to know the official Krita team, and I fell on this

[Grum999]

@TheTwo

I’m guessing it might be a color space

Intriguing topic again about the release of Krita 5

1 bit and indexed colorspaces are not easily possible in Krita, because Krita is built around the LittleCMS color management engine, which only supports real colorspaces.

I think it’s the 3rd or 4th time @novames00 ask for 1bit document…
I think the answers will always be the same

Grum999