Improve markup for color inputs

lib/music_library_web/components/form_component.ex

@@ -59,10 +59,9 @@ defmodule MusicLibraryWeb.FormComponent do
           />
         </div>
         <div class="space-y-4">
-          <fieldset>
-            <legend class="text-sm font-medium leading-6 text-zinc-700 dark:text-zinc-300">
+          <.label for="dominant_colors">
             {gettext("Dominant Colors")}
-            </legend>
+          </.label>
           <div class="mt-2 grid grid-cols-5 gap-2">
             <div
               :for={{color, index} <- Enum.with_index(@form[:dominant_colors].value, 0)}
@@ -79,7 +78,6 @@ defmodule MusicLibraryWeb.FormComponent do
               </span>
             </div>
           </div>
-          </fieldset>
         </div>
         <div class="col-span-full">
           <.label for={@uploads.cover_data.ref}>