*Steps to reproduce:*
# Create a new Unity project
# Switch to the Light Theme via Edit > Preferences > General > Editor Theme
# Observe the tab icons in the Project window (e.g., next to the Search field)

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*Actual results:* The "Search by Import Log Type" icon appears white and is nearly invisible against the light theme

*Expected results:* The icon should adapt its color for proper contrast and visibility in the light theme or a different icon should be used

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*Reproducible with versions:* 2021.3.45f1, 2022.3.62f1, 6000.0.53f1, 6000.1.12f1, 6000.2.0b10, 6000.3.0a2

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*Tested on (OS):* macOS 15.6, Ubuntu 22.04

*Note:* Not reproducible on Dark Theme