Hi! Was doing a lesson of the 100 days of SwiftUI and there was a moment where Paul added an extension to the ShapeStyle protocol instead of the Color one, like this:

extension ShapeStyle where Self == Color { ... }

But even after he kind of explained the reason, i still don't understand why is this a better approach compared to do the extension directly in "Color".

This ShapeStyle protocol is what the background() modifier uses, so what we really want to do is extend Color but do so in a way that all the SwiftUI modifiers using ShapeStyle work too.

So other modififier like .foregroundStyle(_:), .stroke(_:style:) and .tint(_:), however you would not be able to use the extension static var darkBackground in these if you did not use ShapeStyle

@Renato brings up memories from a year ago!

But even after he kind of explained the reason, i still don't understand why is this a better approach

See -> ShapeStyle Discussion