为什么Xcode 10.2.1的字体和颜色与Xcode 9不同？

Question

我下载了Xcode 10.2.1，突然默认字体颜色更改了。我想在Xcode 9中使用以前的颜色，其中注释为绿色。

enum CompassPoint {
    case north, south, east, west
    mutating func turnNorth() {
        self = .north
    }
}
var currentDirection = CompassPoint.west
let rememberedDirection = currentDirection
currentDirection.turnNorth()

print("The current direction is \(currentDirection)")
print("The remembered direction is \(rememberedDirection)")
// Prints "The current direction is north"
// Prints "The remembered direction is west"