Color reset/swap keyboard shortcuts not discoverable via hover tooltips
Hovering the left-panel color reset/swap should show keyboard shortcuts for reset/swap
I lost my entire typed issue report when selecting a template, I'm a bit pissed at the moment.
In my case (which brought me to your question) D for resetting and X for swapping colors is sufficient. Combined with O you can maybe set up some nice workarounds.
Neither is documented when hovering the left-panel color swatches. This is undiscoverable.
Also the color picker has exactly one tooltip, regardless of which portion is hovered. Should this be changed into 4 regions?