CmdPal: Light theme colorization is quite subtle, maybe too subtle

### Microsoft PowerToys version

v0.97.1

### Installation method

PowerToys auto-update

### Area(s) with issue?

Command Palette

### Steps to reproduce

The personalization settings such as Background, System accent color and color intensity are not working,

### ✔️ Expected Behavior

_No response_

### ❌ Actual Behavior

Personalization settings have no effect!

### Additional Information

_No response_

### Other Software

_No response_

No file or test is named. Start by reproducing the issue in the Command Palette area with the Background, System accent color, and color intensity settings, then trace the related personalization entry points. Done means those settings visibly affect the light theme as intended and a regression check covers the behavior.

Written by the indexing model from the issue text.