Colour module was not included

Signed-off-by: Arne Fitzenreiter <arne_f(a)ipfire.org>
---
 src/collecty/plugins/disk.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/collecty/plugins/disk.py b/src/collecty/plugins/disk.py
index a822eb2..fe5e0b9 100644
--- a/src/collecty/plugins/disk.py
+++ b/src/collecty/plugins/disk.py
@@ -25,6 +25,7 @@ import re
 
 from . import base
 
+from ..colours import *
 from ..i18n import _
 
 class GraphTemplateDiskBadSectors(base.GraphTemplate):
-- 
2.6.3