Hello,
Krita has really good blending brushes and blending modes for days.
While Krita don’t have a ‘realistic’ color mixing like MixBox (like Rebelle), and porting MyPaint’s realistic color mixing is currently facing some hicups ( I realized the spectral mixing of mypaint in krita ). I’m sure you wouldn’t really find Krita lacking when mixing colors.
So I think you are talking about a specific ‘CSP Docker’ destined to mixing colors?
If so I can recommend experimenting the Scratchpad Docker. I usually use this docker when trying to mimic the mixing color on a separate palette, like in real live.
This Docker has some quirks/limitations: It can’t use Krita shortcut tools inside of it, like invoking the Popup Palette, Middle click to pan, Ctrl to pick color. So instead you have to use the buttons at the bottom of the window.
Here a video demonstrating it:
I use this docker since it first conception, and Krita 5.0 (Alpha), and now I’m not sure it comes bundle up with Krita. If not you can download it using this link: Scott Petrovic / Krita Scratchpad Docker · GitLab
@scottyp Does the scratchpad docker (and code) is still meant to be used? I saw that the code was removed from the source code (?): Python Scratchpad API fixes (!376) · Merge requests · Graphics / Krita · GitLab
Cheers.