Clean up text layouts and picture radius tokens

styles/31-patterns-text-layouts.css

@@ -4,12 +4,11 @@
 
 .sg-page-text-layouts {
   background: var(--surface-form-preview);
-  color: var(--color-font-dark);
 }
 
 .sg-page-text-layouts .sg-main-heading,
 .sg-page-text-layouts .sg-preview-label {
-  color: var(--color-font-dark);
+  color: inherit;
 }
 
 .sg-text-layout-pattern {