nitpick:
the 'one random colour button' seems not to be assigned to an action included in your keymap.
assigning it to a macro of 'item/track one random color' fixes of course, but just pointing out!
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cooler yet would be the ability detach each floating toolbar and put it somewhere whilst keeping my other floaters somewhere else at different sizes etc. overlords are you listening....
at the moment this would be in the wrong place as i have a higher priority floating toolbar somewhere else...