edit// xxx.12 - I see you've a new version - will check again //
hi Chris,
enjoying the expanding options

Escape and minimise to tray working well here (win 7, x64)
Changing notes with Arrowkeys is broken - Ctrl+Leftarrow works but not Ctrl+Rightarrow. Likewise when the modifier is changed to Alt. Likewise also when Pagekey is used (PgUp works; PgDn not)
When making a new theme:
let's say I'm using Slate theme. I click 'Add' and the new theme reverts to the default.
I'm wondering would it be possible that the new theme could be based on the current theme?
Tray icon:
YMMV but I find the tray icon is visually heavy on the side black bar. I'd recommend making both bars black, or making the black one something equivalent to red e.g. blue or green. (Not sure of my terminology there.)