Inconsistent Animations and Effects in Windows 11 Styles

### Description

The effects designed in the windows 11 styles have fixed brush values for events such as hover or keyboard focus. This causes inconsistent results when properties such as `Background`, `Foreground`, `BorderBrush` etc are set in an application.

### Reproduction Steps

An example to demonstrate this inconsistency involves following steps:
1) Create a WPF application that supports windows 11 styles
2) Create a text box and specify its background to red and foreground to yellow.
3) Hover over the text box or select the text box.

### Expected behavior

The text box should have a background which is a lighter shade of red when hovered over or when typing in.

### Actual behavior

The text box has a whitish/greyish color.

### Regression?

_No response_

### Known Workarounds

_No response_

### Impact

_No response_

### Configuration

.NET 9
Windows 11
x64

### Other information

_No response_