Colors in the "Material Validation" Scene view Draw Mode panels are not updated when changed in Preferences

Reproduction steps:
1. Open the attached "ContributeGIColors" project
2. Make sure the Scene window Draw Mode is "Contributors / Receivers"
3. In the Preferences window change the "Contribute GI: Off / Receive GI: Light Probes" color
4. Observe the "Contribute GI: Off / Receive GI: Light Probes" color in the Scene window "GI Contributors / Receivers" panel

Expected result: The colors are the same
Actual result: The color in the panel is not updated to the color set in Preferences

Reproduced with: 2021.2.0a17, 2021.3.4f1, 2022.1.5f1, 2022.2.0a17
Not reproduced with: 2020.3.36f1, 2021.2.0a16

Reproduced on: Windows 11, macOS 12.0.1 (Intel), macOS 12.4 (M1)

Workaround: Click on the panel’s header (newer versions) or reload the Scene window

Reproducible Preference colors ("Material Validation" Draw Modes):

• "Material Validator Pure Metal"
• "Material Validator Value Too High"
• "Material Validator Value Too Low"