[gtk/wip/otte/reftests: 3/6] reftests: Fix css-currentcolor-alpha.ui test

[Benjamin Otte <otte src gnome org>]

commit 754818544c23184d7f5f6590a87d85f217a3bf52
Author: Benjamin Otte <otte redhat com>
Date:   Thu Mar 28 00:27:51 2019 +0100

    reftests: Fix css-currentcolor-alpha.ui test
    
    The test did not draw anything, which fails now.

 testsuite/reftests/css-currentcolor-alpha.css | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/testsuite/reftests/css-currentcolor-alpha.css b/testsuite/reftests/css-currentcolor-alpha.css
index 363dccc5a2..2479f8eb37 100644
--- a/testsuite/reftests/css-currentcolor-alpha.css
+++ b/testsuite/reftests/css-currentcolor-alpha.css
@@ -2,6 +2,8 @@
 
 window {
   color: alpha(currentColor, 0.0);
+  /* So we draw something */
+  border: 1px solid rebeccapurple;
 }
 
 #reference {