type/base: always use rainbow_colors and overwrite them afterwards

Since the previous commit [type/base: show tinstances not defined in
$this->order in graph] all type instances that are not defined in the
plugin, are colored black. This way you always have nice colors.

1 files changed, 4 insertions, 3 deletions

diff --git a/type/Base.class.php b/type/Base.class.php
index 9ceee4e..5de381e 100644
--- a/type/Base.class.php
+++ b/type/Base.class.php
@@ -12,7 +12,7 @@ class Type_Base {
         var $data_sources = array('value');
         var $order;
         var $legend = array();
-        var $colors
+        var $colors = array();
         var $rrd_title;
         var $rrd_vertical;
         var $rrd_format = '%5.1lf%s';
@@ -175,8 +175,9 @@ class Type_Base {
         function rrd_graph($debug = false) {
                 $this->collectd_flush();
 
-                if (!$this->colors)
-                        $this->rainbow_colors();
+                $colors = $this->colors;
+                $this->rainbow_colors();
+                $this->colors = array_merge($this->colors, $colors);
 
                 $graphdata = $this->rrd_gen_graph();