less/roojs-bootstrap/document-manager.less

diff --git a/less/roojs-bootstrap/document-manager.less b/less/roojs-bootstrap/document-manager.less
index 487c4bc..b820336 100644 (file)
--- a/less/roojs-bootstrap/document-manager.less
+++ b/less/roojs-bootstrap/document-manager.less
@@ -65,6 +65,14 @@
     color: @gray-dark;
 }
 
+.roo-document-manager-preview.disabled > .roo-document-manager-thumb > img {
+    -webkit-filter: grayscale(100%);
+       -moz-filter: grayscale(100%);
+         -o-filter: grayscale(100%);
+        -ms-filter: grayscale(100%);
+            filter: grayscale(100%); 
+}
+
 /*
 * sm
 */