Bugs fixes, Lint fixes, Refactoring

Sources/ColorTool/ColorToolOptions.swift

@@ -16,7 +16,7 @@ struct ColorToolOptions: ParsableArguments {
     var inputFile: String
     
     @Option(help: "Color style to generate: light for light colors only, or all for dark and light colors")
-    var style: String
+    fileprivate var style: String
     
     @Option(help: "Path of xcassets where to generate colors", transform: { $0.replaceTiltWithHomeDirectoryPath() })
     var xcassetsPath: String
@@ -30,3 +30,9 @@ struct ColorToolOptions: ParsableArguments {
     @Option(help: "Extension suffix. Ex: MyApp, it will generate {extensionName}+ColorsMyApp.swift")
     var extensionSuffix: String = ""
 }
+
+extension ColorToolOptions {
+    var colorStyle: ColorStyle {
+        ColorStyle(rawValue: style) ?? .all
+    }
+}