unify menu colors with molstar

src/styles/pdb-ligand-env.css

@@ -10,7 +10,7 @@
     height: auto;
     padding: 10px;
     font: 12px sans-serif;
-    background: #ccd4e0;
+    background: #e9e6e0;
     overflow: auto;
     opacity: 0.8;
     word-wrap: normal;
@@ -34,7 +34,7 @@
 }
 
 .pdb-lig-env-menu-panel {
-    background: #ccd4e0;
+    background: #e9e6e0;
     opacity: 0.9;
     float: right;
     height: 30px;
@@ -58,7 +58,7 @@
 }
 
 .pdb-lig-env-menu-panel>i:hover {
-    color: #637ca0;
+    color: #ae5d04;
 }
 
 .pdb-lig-env-toolbar-container {