diff --git a/app/SettingsWindow.qml b/app/SettingsWindow.qml
index 3b05dc3..34ea734 100644
--- a/app/SettingsWindow.qml
+++ b/app/SettingsWindow.qml
@@ -86,8 +86,8 @@ ApplicationWindow {
                             height: 50
                             Layout.fillWidth: true
                             Layout.columnSpan: 2
-                            onButton_colorChanged: shadersettings.font_color = button_color;
-                            Component.onCompleted: button_color = shadersettings.font_color;
+                            onButton_colorChanged: shadersettings._font_color = button_color;
+                            Component.onCompleted: button_color = shadersettings._font_color;
                         }
                     }
                 }
@@ -112,8 +112,20 @@ ApplicationWindow {
                             Layout.fillWidth: true
                             Layout.columnSpan: 2
 
-                            onButton_colorChanged: shadersettings.background_color= button_color
-                            Component.onCompleted: button_color = shadersettings.background_color;
+                            onButton_colorChanged: shadersettings._background_color= button_color
+                            Component.onCompleted: button_color = shadersettings._background_color;
+                        }
+                    }
+                }
+                GroupBox{
+                    title: qsTr("Background")
+                    Layout.fillWidth: true
+                    Layout.fillHeight:true
+                    ColumnLayout{
+                        SettingComponent{
+                            name: "Contrast"
+                            onValueChanged: shadersettings.contrast = value
+                            _value: shadersettings.contrast
                         }
                     }
                 }
diff --git a/app/ShaderManager.qml b/app/ShaderManager.qml
index a19fa42..a5db8b0 100644
--- a/app/ShaderManager.qml
+++ b/app/ShaderManager.qml
@@ -42,9 +42,9 @@ ShaderEffect {
     property real _A: 0.4 + Math.random() * 0.4
     property real _B: 0.2 + Math.random() * 0.4
     property real _C: 1.2 - _A - _B
-    property real a: (0.1 + Math.random() * 0.4) * 0.05
-    property real b: (0.3 + Math.random() * 0.4) * 0.05
-    property real c: (0.6 + Math.random() * 0.4) * 0.05
+    property real a: (0.0 + Math.random() * 0.4) * 0.05
+    property real b: (0.1 + Math.random() * 0.4) * 0.05
+    property real c: (0.4 + Math.random() * 0.4) * 0.05
 
     property real randval: (_A * Math.cos(a * time + _B) +
                             _B * Math.sin(b * time + _C) +
@@ -83,7 +83,6 @@ ShaderEffect {
         repeat: true
     }
 
-    //TODO fix the glow line which is after the first time
     fragmentShader: "
             uniform sampler2D source;
             uniform highp float qt_Opacity;
@@ -106,13 +105,20 @@ ShaderEffect {
 
     (shadersettings.screen_flickering !== 0 ? "uniform highp float horizontal_distortion;" : "") +
 
-    "float rand(vec2 co, float time){
-                return fract(sin(dot(co.xy ,vec2(0.37898 * time ,0.78233))) * 437.5875453);
+
+            "highp float rand(vec2 co)
+            {
+                highp float a = 12.9898;
+                highp float b = 78.233;
+                highp float c = 43758.5453;
+                highp float dt= dot(co.xy ,vec2(a,b));
+                highp float sn= mod(dt,3.14);
+                return fract(sin(sn) * c);
             }
 
             float stepNoise(vec2 p){
-                vec2 newP = p * txt_Size*0.25;
-                return rand(floor(newP), time);
+                vec2 newP = p * txt_Size*0.5;
+                return rand(floor(newP) + fract(time / 100.0));
             }
 
             float getScanlineIntensity(vec2 pos){
@@ -122,7 +128,7 @@ ShaderEffect {
 
     (glowing_line_strength !== 0 ?
     "float randomPass(vec2 coords){
-                return fract(smoothstep(-0.2, 0.0, coords.y - 3.0 * fract(time * 0.0002))) * glowing_line_strength;
+                return fract(smoothstep(-0.2, 0.0, coords.y - 3.0 * fract(time * 0.0001))) * glowing_line_strength;
             }" : "") +
 
 
diff --git a/app/ShaderSettings.qml b/app/ShaderSettings.qml
index 5612c79..ae8c12a 100644
--- a/app/ShaderSettings.qml
+++ b/app/ShaderSettings.qml
@@ -24,9 +24,20 @@ Item{
     property bool fullscreen: false
 
     property real ambient_light: 0.2
+    property real contrast: 0.9
 
-    property string background_color: "#002200"
-    property string font_color: "#00ff00"
+    function mix(c1, c2, alpha){
+        return Qt.rgba(c1.r * alpha + c2.r * (1-alpha),
+                       c1.g * alpha + c2.g * (1-alpha),
+                       c1.b * alpha + c2.b * (1-alpha),
+                       c1.a * alpha + c2.a * (1-alpha))
+    }
+
+    //Private atttributes might need processing
+    property color _background_color: "#002200"
+    property color _font_color: "#00ff00"
+    property color font_color: mix(_font_color, _background_color, 0.5 + (contrast * 0.5))
+    property color background_color: mix(_background_color, _font_color, 0.5 + (contrast * 0.5))
 
     property real noise_strength: 0.1
     property real screen_distortion: 0.15
@@ -130,6 +141,8 @@ Item{
 
         settings = JSON.parse(settings);
 
+        contrast = settings.contrast ? settings.contrast : contrast;
+
         ambient_light = settings.ambient_light ? settings.ambient_light : ambient_light;
         background_color = settings.background_color ? settings.background_color : background_color;
         font_color = settings.font_color ? settings.font_color : font_color;
@@ -152,6 +165,7 @@ Item{
     function storeCurrentSettings(){
         var settings = {
             ambient_light : ambient_light,
+            contrast : contrast,
             background_color: background_color,
             font_color: font_color,
             screen_flickering: screen_flickering,
diff --git a/app/app.qmlproject.user b/app/app.qmlproject.user
index 0bfa497..e2d3b1a 100644
--- a/app/app.qmlproject.user
+++ b/app/app.qmlproject.user
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 3.0.1, 2014-03-26T18:33:08. -->
+<!-- Written by QtCreator 3.0.1, 2014-03-27T13:16:23. -->
 <qtcreator>
  <data>
   <variable>ProjectExplorer.Project.ActiveTarget</variable>
diff --git a/app/main.qml b/app/main.qml
index d756156..e45260e 100644
--- a/app/main.qml
+++ b/app/main.qml
@@ -115,7 +115,7 @@ ApplicationWindow{
             z: 2.0
             anchors.fill: parent
             cached: true
-            opacity: shadersettings.ambient_light * 0.66
+            opacity: shadersettings.ambient_light * 0.4
             gradient: Gradient{
                 GradientStop{position: 0.0; color: "white"}
                 GradientStop{position: 0.7; color: "#00000000"}