fixed?

.atom/packages/atom-material-ui/styles/sites.less

@@ -1,11 +0,0 @@
-.ui-site(@num, @color) {
-    .ui-site-@{num} {
-        background-color: @color;
-    }
-}
-
-.ui-site(1, @ui-site-color-1);
-.ui-site(2, @ui-site-color-2);
-.ui-site(3, @ui-site-color-3);
-.ui-site(4, @ui-site-color-4);
-.ui-site(5, @ui-site-color-5);