I migrated to Excalibur when it hit stable.

If you open the design window (checkbox), you'll see quite a few more swatches on the right hand side that also drag to the browser to change colors.  The gradient swatch at the top is also draggable like that and if you check the reverse checkbox on the gradient page the swatch will also flip direction.  The left hand column pulls from the style of the loaded webpage and the right hand column pulls from the program and both have some algorithmic swatches added in below those initial colors.

Also, if you click a label under the swatch on the right hand column, you can edit it.  If you click the label under the swatch on the harmony tab, the value copies to the clipboard.  The clipboard is also primary and clipboard simultaneously.  I tried to address as many use cases as I could think of but I may have missed things.

This isn't too complicated to use is it?  I'm open for UI design ideas if it's not a workflow fit for some people.  I based this on what I would consider a good workflow for design but it might not be everyone's cup of tea.

You just made my day.  That's exactly the sort of thing I had in mind for Gamut.  Behold a gradient with #A8D543 as the primary on the hue wheel 15 degree separation between 6 pairs and an angle of 5 degrees for each pair.

Stops: #43d5a1 0%, #43d595 6.25%, #43d57c 18.75%, #43d570 25%, #43d558 37.5%, #43d54c 43.75%, #53d543 56.25%, #5fd543 62.5%, #77d543 75%, #84d543 81.25%, #9cd543 93.75%, #a8d543 100%

If you toggle the measure dialog checkbox and then run the overlay with the color loupe toggled and the crosshairs toggled it has a smaller zoom window that has a live hex display. 

I hadn't thought about adding that to the main zoom window but I've now added the feature as it's a reasonable feature request.   I also added a checkbox to toggle it on or off.  I also updated the help files and documentation with the complete keyboard shortcuts.

Give me a few weeks and I'll commit the simple version along with the toolkit as separate repositories. I'm glad this is gaining a little traction because it's been a project I've spent years developing.

The readme now has pictures at the bottom. I'll do a more comprehensive set when I have time.

Sorry folks, had it set to private accidentally.

You can override the behavior by adding efi=runtime to the kernel options.  PREEMPT_RT kernels have this off by default in their config files due to the above mentioned measurements.  My concern is that once everything is loaded by EFISTUB exactly how many EFI function calls happen in the course of using the system and how would that affect realtime.  I'll report back if I find any negatives.

As for your DAW issue, all I can say is that up until 4 days ago, I was running a 1050ti with the nouveau driver and the rt kernel with no xruns when using guitarix.  I don't record so I can't really speak to that as my issue with nvidia cards.  I could never get their nonfree driver to load but didn't worry about it too hard TBH.  I got a decent bonus this year so I just got a Radeon RX 6650 XT last Thursday because I couldn't do blender without significant frustration and needed it to do CNC with.  The blendercam plugin is fairly decent and, once you learn a few vagaries, blender puts freecad to shame.  I'd say my advice would be to ditch nvidia as amd seems to give a damn if it's at all possible for you.  My new card cost $310 but it was well worth it IMHO.  It's a XFX Speedster QICK308 Radeon RX 6650XT if you might be wondering.