Play Mode Status green checkmark is not light theme friendly

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Make sure light theme is enabled
3. Install the Multiplayer Play Mode package (com.unity.multiplayer.playmode)
4. Open the Play Mode Scenarios dropdown next to the Play Mode button
5. Select "Configure Play Mode Scenarios"
6. Create a new Scenario by pressing the "+" button
7. Select the new Scenario in the Play Mode Scenarios dropdown
8. Enter Play Mode
9. Observe the Play Mode Status 

Actual results: The green checkmark is bright and hard to see with light theme

Expected results: All symbols are easy to see and light/dark theme friendly

Reproducible with versions: 6000.0.66f1, 6000.3.5f1, 6000.4.0b5, 6000.5.0a5

Tested on (OS): MacOS Silicon Tahoe 26.2