Add more button/navbar colors and gradient mix section to theme editor

src/actions/admin-theme.ts

@@ -10,12 +10,20 @@ import { FONTS, PRESETS, THEME_COLOR_KEYS } from "@/lib/theme-presets";
 
 // Only hex/keyword colour values are accepted (matches ThemeVars' sanitiser).
 const COLOR_RE = /^[#a-zA-Z0-9(),.\s%-]+$/;
-// Extra colour settings beyond the preset palette (buttons + links).
+// Extra colour settings beyond the preset palette (buttons + links + gradients).
 const EXTRA_COLOR_KEYS = [
   "button_secondary_color",
+  "button_secondary_text_color",
   "button_danger_color",
+  "button_danger_text_color",
+  "button_outline_color",
+  "button_outline_text_color",
+  "button_secondary_hover_color",
+  "button_danger_hover_color",
   "link_color",
   "link_hover_color",
+  "gradient_from",
+  "gradient_to",
 ];
 const HEADING_KEYS = ["size_heading_h1", "size_heading_h2", "size_heading_h3"];
 const CUSTOM_CSS_MAX = 20000;