Set green colour for selection in light mode.

Matches the design of the dark mode, where the selection colour is
similar to the accent colour.

sass/main.scss

@@ -27,7 +27,6 @@
   --primary-color: #ef5350;
   --hover-color: white;
   --background-color: #1f1f1f;
-  // --navbar-color:#222226;
   --secondary-color: #696969;
   --highlights: #b35a5a;
   --links: #d35d6e;
@@ -47,7 +46,7 @@
   --bg-2: #fefefe;
   --hover-color: white;
   --background-color: #fff;
-  // --navbar-color:#e3e3e3;
+  --primary-color: #9fca5b;
   --secondary-color: rgb(158, 158, 158);
   --links: #799351;
   --text-color: #222226;