Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

submodules/HexColor/BUILD

@@ -0,0 +1,18 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "HexColor",
+    module_name = "HexColor",
+    srcs = glob([
+		"Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+	    "//submodules/TextFormat:TextFormat",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/HexColor/Sources/HexColor.swift

@@ -0,0 +1,16 @@
+import Foundation
+import UIKit
+import TextFormat
+
+public extension UIColor {
+    var hexString: String {
+        var red: CGFloat = 0.0
+        var green: CGFloat = 0.0
+        var blue: CGFloat = 0.0
+        self.getRed(&red, green: &green, blue: &blue, alpha: nil)
+        
+        let rgb: UInt32 = (UInt32(red * 255.0) << 16) | (UInt32(green * 255.0) << 8) | (UInt32(blue * 255.0))
+        
+        return String(rgb, radix: 16, uppercase: false).rightJustified(width: 6, pad: "0")
+    }
+}