REFA: extended usage of _hex variable

src/color.js

@@ -12,7 +12,7 @@ class Color {
     #red;
     #green;
     #blue;
-    #hex;
+    _hex;
 
     /**
      * 
@@ -40,7 +40,10 @@ class Color {
      * @returns 
      */
     hex(hexcode) {
-        this.#hex = hexcode;
+        if (!hexcode.startsWith('#')) {
+            hexcode = '#' + hexcode;
+        }
+        this._hex = hexcode;
         return this;
     }
 }

src/modifier.js

@@ -174,11 +174,15 @@ class Modifier {
      * @returns {Modifier} this modifier object
      */
     background(color) {
-        this._modifications["background-color"] = (
-            color
-                ? color.cssRGBString()
-                : "inherit"
-        );
+        if (color) {
+            if (color._hex) {
+                this._modifications["background-color"] = color._hex;
+            } else {
+                this._modifications["background-color"] = color.cssRGBString();
+            }
+        } else {
+            this._modifications["background-color"] = "inherit";
+        }
         return this;
     }