In the Lighting window, when user selected tabs like Scene, Environment or Baked Lightmaps are very hard to read the text in the selected tabs due to the blue color of the texts. Which get mixed with black background

Steps to Reproduce:

1. Create a new Project
2. Go to Window > Rendering > Lighting
3. Select tabs like Scene, Environment or baked lightmaps

Expected Result:
Texts of the tabs should be readable

Actual Result:
Texts of the tabs are not readable due to blue color

Reproducible on: 2020.2.0a4

Working fine on: 2020.2.0a3, 2020.1.0b2, 2019.3.3f1

Environment: Windows 10 and Mac 10.14