diff --git a/htroot/Network.html b/htroot/Network.html
index aedc41c1a..c544249e9 100644
--- a/htroot/Network.html
+++ b/htroot/Network.html
@@ -193,7 +193,7 @@
     </div>
     
     <div id="left">
-    <a href="NetworkPicture.png?width=768&amp;height=576"><img src="NetworkPicture.png" alt="The yacy Network" /></a>
+    <a href="NetworkPicture.png?width=768&height=576&bgcolor=000000"><img src="NetworkPicture.png?width=768&height=576&bgcolor=000000" alt="The yacy Network" /></a>
     </div>
 	<div id="left">
     <table border="0">
diff --git a/htroot/NetworkPicture.java b/htroot/NetworkPicture.java
index 4570f5b79..d45bedcbc 100644
--- a/htroot/NetworkPicture.java
+++ b/htroot/NetworkPicture.java
@@ -59,6 +59,7 @@ public class NetworkPicture {
         int passiveLimit = 300;
         int potentialLimit = 300;
         int maxCount = 1000;
+        String bgcolor = plasmaGrafics.COL_BACKGROUND;
         boolean corona = true;
         
         if (post != null) {
@@ -68,6 +69,7 @@ public class NetworkPicture {
             potentialLimit = post.getInt("pol", 300);
             maxCount = post.getInt("max", 1000);
             corona = post.get("corona", "true").equals("true");
+            bgcolor = post.get("bgcolor", bgcolor);
         }
         
         //too small values lead to an error, too big to huge CPU/memory consumption, resulting in possible DOS.
@@ -78,7 +80,7 @@ public class NetworkPicture {
         if (passiveLimit > 1000000) passiveLimit = 1000000;
         if (potentialLimit > 1000000) potentialLimit = 1000000;
         if (maxCount > 1000) maxCount = 1000;
-        return plasmaGrafics.getNetworkPicture(10000, width, height, passiveLimit, potentialLimit, maxCount, corona, env.getConfig("network.unit.name", "unspecified"), env.getConfig("network.unit.description", "unspecified"));
+        return plasmaGrafics.getNetworkPicture(10000, width, height, passiveLimit, potentialLimit, maxCount, corona, env.getConfig("network.unit.name", "unspecified"), env.getConfig("network.unit.description", "unspecified"), bgcolor);
     }
     
 }
diff --git a/source/de/anomic/plasma/plasmaGrafics.java b/source/de/anomic/plasma/plasmaGrafics.java
index 40401d7bd..39276d4e5 100644
--- a/source/de/anomic/plasma/plasmaGrafics.java
+++ b/source/de/anomic/plasma/plasmaGrafics.java
@@ -64,9 +64,9 @@ public class plasmaGrafics {
     private static int shortestName = 10;
     private static int longestName = 12;
 
+    public  static final String COL_BACKGROUND = "080808"; /*"FFFFE0"*/
     private static final String COL_DHTCIRCLE = "400030"; /*"008020"*/
     private static final long   COL_HEADLINE   = ymageMatrix.SUBTRACTIVE_BLACK;
-    private static final String COL_BACKGROUND = "080808"; /*"FFFFE0"*/
     private static final String COL_ACTIVE_DOT     = "181808";
     private static final String COL_ACTIVE_LINE    = "604040";
     private static final String COL_ACTIVE_TEXT    = "b080b0";
@@ -127,7 +127,7 @@ public class plasmaGrafics {
         if (primarySearches == null) return null; // this was a local search and there are no threads
 
         // get a copy of a recent network picture
-        ymageMatrix eventPicture = getNetworkPicture(120000, plasmaSwitchboard.getSwitchboard().getConfig("network.unit.name", "unspecified"), plasmaSwitchboard.getSwitchboard().getConfig("network.unit.description", "unspecified"));
+        ymageMatrix eventPicture = getNetworkPicture(120000, plasmaSwitchboard.getSwitchboard().getConfig("network.unit.name", "unspecified"), plasmaSwitchboard.getSwitchboard().getConfig("network.unit.description", "unspecified"), COL_BACKGROUND);
         if (eventPicture instanceof ymageMatrix) eventPicture = (ymageMatrix) eventPicture; //new ymageMatrix((ymageMatrix) eventPicture);
         // TODO: fix cloning of ymageMatrix pictures
         
@@ -172,18 +172,18 @@ public class plasmaGrafics {
         return eventPicture;
     }
 
-    public static ymageMatrix getNetworkPicture(long maxAge, String networkName, String networkTitle) {
-        return getNetworkPicture(maxAge, 640, 480, 300, 300, 1000, true, networkName, networkTitle);
+    public static ymageMatrix getNetworkPicture(long maxAge, String networkName, String networkTitle, String bgcolor) {
+        return getNetworkPicture(maxAge, 640, 480, 300, 300, 1000, true, networkName, networkTitle, bgcolor);
     }
 
-    public static ymageMatrix getNetworkPicture(long maxAge, int width, int height, int passiveLimit, int potentialLimit, int maxCount, boolean corona, String networkName, String networkTitle) {
+    public static ymageMatrix getNetworkPicture(long maxAge, int width, int height, int passiveLimit, int potentialLimit, int maxCount, boolean corona, String networkName, String networkTitle, String bgcolor) {
         if ((networkPicture == null) || ((System.currentTimeMillis() - networkPictureDate) > maxAge)) {
-            drawNetworkPicture(width, height, passiveLimit, potentialLimit, maxCount, corona, networkName, networkTitle);
+            drawNetworkPicture(width, height, passiveLimit, potentialLimit, maxCount, corona, networkName, networkTitle, bgcolor);
         }
         return networkPicture;
     }
 
-    private static void drawNetworkPicture(int width, int height, int passiveLimit, int potentialLimit, int maxCount, boolean corona, String networkName, String networkTitle) {
+    private static void drawNetworkPicture(int width, int height, int passiveLimit, int potentialLimit, int maxCount, boolean corona, String networkName, String networkTitle, String bgcolor) {
 
         int innerradius = Math.min(width, height) / 5;
         int outerradius = innerradius + innerradius * yacyCore.seedDB.sizeConnected() / 100;
@@ -191,7 +191,7 @@ public class plasmaGrafics {
 
         if (yacyCore.seedDB == null) return; // no other peers known
 
-        networkPicture = new ymageMatrix(width, height, COL_BACKGROUND);
+        networkPicture = new ymageMatrix(width, height, bgcolor);
         networkPicture.setMode(ymageMatrix.MODE_SUB);
 
         // draw network circle