Use brand green color for custom tip block (#596)

Author: tomasMizera

src/.vitepress/theme/style.css

@@ -123,17 +123,6 @@
   }
 }
 
-/**
- * Component: Custom Block
- * -------------------------------------------------------------------------- */
-
-:root {
-  --vp-custom-block-tip-border: transparent;
-  --vp-custom-block-tip-text: var(--vp-c-text-1);
-  --vp-custom-block-tip-bg: var(--vp-c-indigo-soft);
-  --vp-custom-block-tip-code-bg: var(--vp-c-indigo-soft);
-}
-
 /**
  * Component: Algolia
  * -------------------------------------------------------------------------- */