how can i make unitys dash darker?

Hello, im trying to make unity darker like in adobe after effects.
iv seen videos on youtube where unity is dark(er) but i dont know how they did it.
please help me

Click on your tags, put in a minimum of effort and you should find your solutions really fast… =/
also, you can use Programmable Search Engine

The dark skin for Unity3D is a pro only feature, unfortunately. We the non-pro-people will have to make do with the light skin.

Ah, I have always liked the dark skin very much.