Tabs names from files with staged changes not very readable on Milkshake themes

<img width="618" height="39" alt="Image" src="https://github.com/user-attachments/assets/44f0a16a-1cde-4898-a30a-81c70e95edcd" />

This problem only exists on the Milkshake themes and it is the worse on Blueberry. The other Light themes solve this by making that yellow color darker.