....

Back/Common/ExclusiveAttribute.cs

@@ -0,0 +1,13 @@
+namespace Back.Common
+{
+    public class ExclusiveAttribute
+    {
+        [AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Method | AttributeTargets.Class,
+        AllowMultiple = false)]
+        public class ColorAttribute : Attribute
+        {
+            public string _ColorHex;
+            public ColorAttribute(string ColorHex) => _ColorHex = ColorHex;
+        }
+    }
+}