Improve bulk actions color contrast

ui/src/common/SongBulkActions.js

@@ -10,8 +10,7 @@ const SongBulkActions = (props) => {
   const unselectAll = useUnselectAll()
   useEffect(() => {
     unselectAll(props.resource)
-    // eslint-disable-next-line
+  }, [unselectAll, props.resource])
-  }, [])
   return (
     <Fragment>
       <BatchPlayButton

ui/src/themes/dark.js

@@ -4,7 +4,7 @@ export default {
   themeName: 'Dark',
   palette: {
     primary: {
-      main: '#90caf9',
+      main: '#00fcf4',
     },
     secondary: blue,
     type: 'dark',