All for it!

For users not familiar with what I mean, have a look here:
https://www.bigbrain3d.com/product/simplycolor3d-software-to-make-any-3d-print-multicolor/

Or here:
https://www.mosaicmfg.com/blogs/news/updated-and-completely-refreshed-canvas-now-lets-you-digitally-paint-your-models

Please! This would be amazing!

Yes please! 👍🏻

Yeah great idea. We need really this feature

Great feature! Hope to see it implemented into PS.

This is a "MUST" for MMU...

Sounds like a great addition request.

Oh yes please!

Would love to have all my 3D needs in Prusa Slic3r

Yes!!!! This would convince me to but a mmu!

I'm all in for this feature. Prusa needs to provide this to keep up with competition.

I just saw a reference to Pepr3D, designed with the help of Prusa, and used to paint single color stl files for importing into PrusaSlicer.

Turns out there is such a software that PRUSA Research contributed to. Josef mentioned it at a Q&A session at a States-side convention. Video is here: https://www.youtube.com/watch?v=jh2tMyOjG1I
This app's v1.0 is open-source, compatible with PRUSA and works relatively well in spite of its beta feel. It's available on GitHub here: https://github.com/tomasiser/pepr3d/releases/download/v1.0/Pepr3D-Windows-x64.zip

Do we need a 3d painter integrated with PrusaSlicer or is a working, free, standalone compatible and open-source app just as good?

I just saw a reference to Pepr3D, designed with the help of Prusa, and used to paint single color stl files for importing into PrusaSlicer.

Yup, see the links above...

Please! This would be amazing for my MMU2S 😃

Now that we can "paint" support enforcers and blockers, surely this feature can be too far off?

Need this desperately, for some reason meshmixer does not play nice with my models

My idea and question would be the following, in mmu, could it be possible to paint the objects with a brush and choose the selected parts to print with a certain color?
As the brush for supports was implemented, please consider the option, separating the object into several parts is for design professionals, I only have basic knowledge

Implemented in PrusaSlicer 2.4.0-alpha1

The painting thing is awesome. I did notice it crashes out if I don't exit painting mode before slicing and manually painting on the model (rather than bucket fill) is incredibly laggy. I usually have to wait 3-5 seconds before I can see the model painted but it's understood it's alpha.

@gordo3di Of background slicing is in, it is very laggy. For me it works Good of background slicing is off.

@jmd73 Weird. I have background processing off. The first time I was using the program (with an instance of 2,3 open as well) everything was very laggy especially manipulating the view but most of that went away when I restarted so it may just be something different on my end.