diff --git a/monsterui/core.py b/monsterui/core.py
index 650f60f..0615059 100644
--- a/monsterui/core.py
+++ b/monsterui/core.py
@@ -75,7 +75,6 @@ def _headers_theme(color, mode='auto', radii=ThemeRadii.sm, shadows=ThemeShadows
     return fh.Script(f'''
         const htmlElement = document.documentElement;
         {mode_script[mode]}
-          htmlElement.classList.add("uk-theme-{color}");
           htmlElement.classList.add(__FRANKEN__.theme || "uk-theme-{color}");
           htmlElement.classList.add(__FRANKEN__.radii || "{radii}");
           htmlElement.classList.add(__FRANKEN__.shadows || "{shadows}");
diff --git a/nbs/01_core.ipynb b/nbs/01_core.ipynb
index 0c8482c..2bb6a49 100644
--- a/nbs/01_core.ipynb
+++ b/nbs/01_core.ipynb
@@ -199,7 +199,6 @@
     "    return fh.Script(f'''\n",
     "        const htmlElement = document.documentElement;\n",
     "        {mode_script[mode]}\n",
-    "          htmlElement.classList.add(\"uk-theme-{color}\");\n",
     "          htmlElement.classList.add(__FRANKEN__.theme || \"uk-theme-{color}\");\n",
     "          htmlElement.classList.add(__FRANKEN__.radii || \"{radii}\");\n",
     "          htmlElement.classList.add(__FRANKEN__.shadows || \"{shadows}\");\n",