Desktop-specific taskbar tint (subtle, via click-through overlay)

[paehtz]

Idea

Tint the whole taskbar in a very subtle shade of the active desktop colour (not garish, ~8-15% opacity), so you can tell at a glance which desktop you are on. Uses the same per-desktop colour as the accent bar.

Approach

The real Windows 11 taskbar cannot be recoloured through a supported API. Implement as a translucent, click-through overlay spanning the primary taskbar width (WS_EX_TRANSPARENT + layered window, low opacity), updated on every desktop change.

Notes / caveats

• It is an overlay, not the system taskbar
• Must stay click-through so the taskbar remains usable
• Needs the same z-order handling as the bar; follows the primary taskbar geometry
• Toggle in CONF (TaskbarTint = 0|1 + opacity)

Tasks

• Click-through layered overlay across the primary taskbar
• Tint colour from the active desktop; update on change
• keep-on-top / z-order handling
• CONF toggle + opacity
• Document