Aseprite
Grayscale preview to check values?
https://twitter.com/pixquare_app/status/1760948727202865221
Can we expect something like this in future updates?

I been using some workarounds like:
new layer > paint fill in gray > layer properties to color

And the 'sprite > color mode > grayscale' is useless since we lost all colors and palette forever (need to ctrl+z to don't lose all your progress).

Both options do not help with the workflow at all... They're frustrating to be honest.
I don't how difficult is to make something like this, but would highly appreciate it.