How to reproduce:
1. Open the “TrailColor“ project
2. Navigate to the “Edit > Project Settings > Player“
3. Expand Other Settings
4. Set Color Space to Linear
5. Select the “Particle System“ GameObject in the Hierarchy window
6. Observe the Game view

Expected result: The color of the particles and the Trails are the same
Actual result: The color of the Trails is lighter than the particles

Reproducible with: 2021.3.37f1, 2022.3.26f1, 2023.2.19f1, 6000.0.0b16

Reproducible on: macOS 13.5.2 (Intel), Windows 10 Pro
Not reproducible on: No other environments tested

Notes:
- Reproducible in the Player
- Switching the Color Space to Gamma fixes the issue