fixed custom color chooser on new category page

src/main/resources/static/css/spectrum.css

+#customColorPickerContainer .sp-replacer {
+    border: none;
+    padding: 0;
+}
+
+#customColorPickerContainer .sp-preview {
+    border: none;
+    height: 100%;
+    width: 100%;
+}
\ No newline at end of file

src/main/resources/templates/categories/newCategory.ftl

@@ -13,6 +13,7 @@
 
         <@header.header "BudgetMaster - ${title}"/>
         <link type="text/css" rel="stylesheet" href="<@s.url '${"/css/libs/spectrum.css"}'/>"/>
+        <@header.style "spectrum"/>
     </head>
     <@header.body>
         <#import "../helpers/navbar.ftl" as navbar>