Reproduction steps:
1. Open the attached “IN-118429.zip” project
2. Open the “SampleScene”
3. From the Hierarchy, select the “HDR” GameObject
4. In the Inspector, click on the “Hdr Color” color bar to open the HDR Color window
5. Choose any bright color for better visibility
6. Save the color as a Swatch (click on the Add New Preset button)
7. Select the same saved Swatch
8. Observe the color

Expected result: The color value does not change
Actual result: The color value changes

Reproducible with: 6000.0.36f1, 6000.0.59f1, 6000.2.7f1, 6000.3.0b4, 6000.4.0a1
Not reproducible with: 6000.0.35f1

Reproducible on: Windows 11
Not reproducible on: no other environments tested

Notes:
- The more Swatches are created from the same color, the whiter/more washed out it becomes, eventually sometimes just turning white completely
- Does not reproduce with non-HDR color picker