How to reproduce:
1. Open the attached project "IN-125666"
2. Open "SampleScene"
3. Enter Play Mode
4. Select "UI" GameObject in the Hierarchy
5. In the Inspector, press "Test Stars" button
6. In the UI Toolkit Debugger window, select the first VisualElement under the "#starRating" VisualElement
7. Observe the shown color for "-unity-background-image-tint-color" in the UI Toolkit Debugger
8. Click on the shown "-unity-background-image-tint-color" color
9. Observe the color wheel
Actual result: Color is set to white but shows up as purple in the color wheel
Expected result: Color is set to purple
Reproducible with: 2022.1.0a1, 6000.0.63f1, 6000.2.14f1, 6000.3.0f1, 6000.4.0a5, 6000.5.0a2
Reproducible on: Windows 11
Not reproducible on: No other environments tested
Workaround: Initializing new color using normalized parameters