diff --git a/Effects/forest.eff b/Effects/forest.eff
index 2ab35deb6..78bc67924 100644
--- a/Effects/forest.eff
+++ b/Effects/forest.eff
@@ -34,6 +34,13 @@
     <depth-factor type="float">0.04</depth-factor>
     <canopy-height type="float">15.0</canopy-height>
     <quality-level><use>/sim/rendering/quality-level</use></quality-level>
+    
+    <!-- sets the season color -->
+    <season-red type="float">0.12</season-red>
+    <season-green type="float">0.86</season-green>
+    <season-blue type="float">0.0</season-blue>
+    <!-- end season color -->
+    
   </parameters>
   <generate>
     <tangent type="int">6</tangent>
@@ -173,6 +180,26 @@
         <type>float</type>
         <value><use>quality-level</use></value>
       </uniform>
+      <uniform>
+      	<name>red</name>
+      	<type>float</type>
+      	<value><use>season-red</use></value>
+      </uniform>
+      <uniform>
+      	<name>green</name>
+      	<type>float</type>
+      	<value><use>season-green</use></value>
+      </uniform>
+      <uniform>
+      	<name>blue</name>
+      	<type>float</type>
+		<value><use>season-blue</use></value>
+      </uniform>
+      <uniform>
+      	<name>alpha</name>
+      	<type>float</type>
+      	<value>0.0</value>
+      </uniform>
     </pass>
   </technique>
 </PropertyList>
diff --git a/Effects/glacier.eff b/Effects/glacier.eff
index 641c37be0..c6e58025a 100644
--- a/Effects/glacier.eff
+++ b/Effects/glacier.eff
@@ -34,6 +34,13 @@
     <depth-factor type="float">0.01</depth-factor>
     <canopy-height type="float">15.0</canopy-height>
     <quality-level><use>/sim/rendering/quality-level</use></quality-level>
+    
+    <!-- sets the season color -->
+    <season-red type="float">0.12</season-red>
+    <season-green type="float">0.86</season-green>
+    <season-blue type="float">0.0</season-blue>
+    <!-- end season color -->
+    
   </parameters>
   <generate>
     <tangent type="int">6</tangent>
@@ -173,6 +180,26 @@
         <type>float</type>
         <value><use>quality-level</use></value>
       </uniform>
+      <uniform>
+      	<name>red</name>
+      	<type>float</type>
+      	<value><use>season-red</use></value>
+      </uniform>
+      <uniform>
+      	<name>green</name>
+      	<type>float</type>
+      	<value><use>season-green</use></value>
+      </uniform>
+      <uniform>
+      	<name>blue</name>
+      	<type>float</type>
+		<value><use>season-blue</use></value>
+      </uniform>
+      <uniform>
+      	<name>alpha</name>
+      	<type>float</type>
+      	<value>0.0</value>
+      </uniform>
     </pass>
   </technique>
 </PropertyList>
diff --git a/Effects/herbtundra.eff b/Effects/herbtundra.eff
index 0d30ff2fd..ece1a4817 100644
--- a/Effects/herbtundra.eff
+++ b/Effects/herbtundra.eff
@@ -33,6 +33,13 @@
     <snow-level><use>/sim/rendering/snow-level-m</use></snow-level>
     <depth-factor type="float">0.01</depth-factor>
     <canopy-height type="float">15.0</canopy-height>
+    
+    <!-- sets the season color -->
+    <season-red type="float">0.12</season-red>
+    <season-green type="float">0.86</season-green>
+    <season-blue type="float">0.0</season-blue>
+    <!-- end season color -->
+    
     <quality-level><use>/sim/rendering/quality-level</use></quality-level>
   </parameters>
   <generate>
@@ -173,6 +180,26 @@
         <type>float</type>
         <value><use>quality-level</use></value>
       </uniform>
+      <uniform>
+      	<name>red</name>
+      	<type>float</type>
+      	<value><use>season-red</use></value>
+      </uniform>
+      <uniform>
+      	<name>green</name>
+      	<type>float</type>
+      	<value><use>season-green</use></value>
+      </uniform>
+      <uniform>
+      	<name>blue</name>
+      	<type>float</type>
+		<value><use>season-blue</use></value>
+      </uniform>
+      <uniform>
+      	<name>alpha</name>
+      	<type>float</type>
+      	<value>0.0</value>
+      </uniform>
     </pass>
   </technique>
 </PropertyList>
diff --git a/Shaders/forest.frag b/Shaders/forest.frag
index e54016026..0dc6c620e 100644
--- a/Shaders/forest.frag
+++ b/Shaders/forest.frag
@@ -15,6 +15,8 @@ uniform sampler2D SampleTex2;
 uniform sampler2D NormalTex;
 uniform float depth_factor;
 
+uniform float red, green, blue, alpha;
+
 uniform float quality_level; // From /sim/rendering/quality-level
 uniform float snowlevel; // From /sim/rendering/snow-level-m
 
@@ -102,7 +104,7 @@ void main (void)
 	fogFactor = exp2(-gl_Fog.density * gl_Fog.density * fogCoord * fogCoord * LOG2);
 	float biasFactor = exp2(-0.00000002 * fogCoord * fogCoord * LOG2);
 
-	float n=0.02;
+	float n=0.06;
 	n += nvL[0]*0.4;
 	n += nvL[1]*0.6;
 	n += nvL[2]*2.0;
@@ -126,9 +128,10 @@ void main (void)
 	
 	//draw floor where !steep, and another blurb for smoothing transitions
 	vec4 c3, c4, c5, c3a, c4a, c5a;
-	c3 = mix(vec4(n-0.88, n-0.14, -n, 0.0), c1, smoothstep(0.990, 0.970, abs(normalize(Normal).z)+nvL[2]*1.3));
-	c4 = mix(vec4(n-0.88, n-0.74, -n, 0.0), c1, smoothstep(0.990, 0.890, abs(normalize(Normal).z)+nvL[2]*0.9));
-	c4a = mix(vec4(n-0.76, n-0.66, -n, 0.3), c1, smoothstep(0.990, 0.970, abs(normalize(Normal).z)+nvL[2]*1.32));
+	float subred = 1.0 - red; float subgreen = 1.0 - green; float subblue = 1.0 - blue;
+	c3 = mix(vec4(n-subred, n-subgreen, -n, alpha), c1, smoothstep(0.990, 0.970, abs(normalize(Normal).z)+nvL[2]*1.3));
+	c4 = mix(vec4(n-subred, n-subgreen-0.6, -n, alpha), c1, smoothstep(0.990, 0.890, abs(normalize(Normal).z)+nvL[2]*0.9));
+	c4a = mix(vec4(n-subred+0.12, n-subgreen-0.52, -n, 0.0), c1, smoothstep(0.990, 0.970, abs(normalize(Normal).z)+nvL[2]*1.32));
 	c5 = mix(c3, c4, 1.0);
 	c5a = mix(c3, c4a, 1.0);
 	
@@ -173,10 +176,10 @@ void main (void)
 	diffuse = gl_Color.rgb * max(0.8, dot(N, l)) * max(0.9, dot(VNormal, gl_LightSource[0].position.xyz));
 	}
 	
-	//should come as varying!
-	vec4 constantColor = vec4(1.0, 1.0, 1.0, 0.0);
 
-    vec4 ambient_light = gl_LightSource[0].diffuse * constantColor * vec4(diffuse, 1.0);
+	//vec4 constantColor = vec4(1.0, 1.0, 1.0, 0.0);
+
+    vec4 ambient_light = gl_LightSource[0].diffuse * vec4(diffuse, 0.0);
 
 	c1 *= ambient_light;
 	vec4 finalColor = c1;