slightly more distinct active class

Author: silverwind

web_src/less/themes/theme-arc-green.less

@@ -94,7 +94,7 @@
   --color-light: #00000028;
   --color-light-border: #ffffff28;
   --color-hover: #60606020;
-  --color-active: #60606030;
+  --color-active: #60606040;
   --color-menu: #2e323e;
   --color-card: #2e323e;
   --color-markdown-table-row: #ffffff06;