Fluent2 Light LayerFillColorAlt Is Unusable

[robert-abeo]

Description

In Dark theme LayerFillColorAlt is set to #0DFFFFFF -- mostly transparent white.
In Light theme LayerFillColorAlt is set to #FFFFFF -- full white.

Obviously, full white in light theme doesn't make a lot of sense. This should be mostly transparent black IMO (a very light grey).

This may be an issue upstream in WinUI. I haven't checked at the moment.

Reproduction Steps

See Fluent2 Dark/Light Resources.

Expected behavior

LayerFillColorAlt should be visible on the ApplicationBackgroundColor

Actual behavior

LayerFillColorAlt is barely visible on top of ApplicationBackgroundColor (both are almost full white)

Regression?

No response

Known Workarounds

No response

Impact

No response

Configuration

No response

Other information

No response