How To Change The World's Background in Blender 2.9 - Sketch Overflow
Call for Content: Themes - User Feedback - Blender Developer Talk
Themes — Blender Manual
Blender V – Darker UI for Blender to showcase your work. – 3DCineTV
So i downloaded and tested Modo free trial this morning. And guess what i found! Blender and Modo looks visually the same! If you change Blender's theme to Modo that is. Although
Themes — Blender Manual
Themes: How to change the color settings of a temporary field within the Info panel - Blender Stack Exchange