*Steps to reproduce:*
# Create new Unity Project (make sure Editor is set to Light theme)
# Create Shader Graph Asset
# Open Shader Graph window
# Observe the Blackboard icon at the top right in the Shader Graph window

*Actual results:* Blackboard icon is hardly visible in the Shader Graph window or in Shader Sub Graph window when Editor is set to Light theme

*Expected results:* Blackboard icon is visible in the Shader Graph window or in Shader Sub Graph window when Editor is set to Light theme

*Reproducible with versions:*  6000.0.47f1, 6000.1.0b15, 6000.2.0a9

*Can’t test with versions:* 2022.3.61f1 (Buttons with text instead of icons)

*Tested on (OS):* Windows 11 Windows 11 (22H2)