diff --git a/bin/graph-diff-color b/bin/graph-diff-color
index 20393c7..775f86a 100755
--- a/bin/graph-diff-color
+++ b/bin/graph-diff-color
@@ -1,3 +1,3 @@
 #!/bin/sh
 
-graph-easy --as boxart | GREP_COLOR='01;31' grep --color=always "\-\S*\|$" | GREP_COLOR='01;32' grep --color=always "\+\S*\|$"
+graph-easy --as boxart | GREP_COLOR='01;31' GREP_COLORS='mt=01;31' grep --color=always "\-\S*\|$" | GREP_COLOR='01;32' GREP_COLORS='mt=01;32' grep --color=always "\+\S*\|$"