How can we use Assets Catalog Color Sets?

Question

I usually use custom UIColors on iOS using extensions with Swift, but now with iOS 11/ Xcode 9 we can create Colors Sets. How can we use them?

Update - Tip

Answer 1

UIColor(named: "myColor") 

Source: WWDC 2017 Session 237 —— What's New in MapKit

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Caveat: Your project's Deployment Target needs to be set to iOS 11.0.