Tweak icon colors

resources/less/metager/parts/searchbar.less

@@ -186,13 +186,10 @@
     height: 15px;
     filter: invert(1) brightness(0.4);
 }
-#searchbar-img-key {
-    height: 15px;
-    filter: invert(1) brightness(0.4);
-}
+
 #searchbar-img-lupe {
     height: 15px;
-    filter: invert(1) brightness(0.4);
+    filter: invert(1) brightness(0.1);
 }
 .search-submit button {
     cursor: pointer;