UI Customization for newbies

 From:  berkoman
11768.1 
Hey there,

I've been transitioning from Fusion 360 for a little while now and loving the fast workflow between Adobe Illustrator and MOI.

While diving a little deeper, I've found various super cool scripts and a layout set in here and YouTube. What I've been wondering is how to customize the UI layout and color like examples below. Would appreciate any help.

Thanks!
- Berk