diff --git a/plugins/rendermax/renderer_opengl.hpp b/plugins/rendermax/renderer_opengl.hpp
index 09d96ae45..525460b71 100644
--- a/plugins/rendermax/renderer_opengl.hpp
+++ b/plugins/rendermax/renderer_opengl.hpp
@@ -166,6 +166,27 @@ public:
                 colorizeTile(x,y);
     };
 };
+
+struct lightCell
+{
+    float r,g,b;
+    lightCell():r(0),g(0),b(0)
+    {
+        
+    }
+    lightCell(float r,float g,float b):r(r),g(g),b(b)
+    {
+
+    }
+    lightCell operator*(float val)
+    {
+        return lightCell(r*val,g*val,b*val);
+    }
+    lightCell operator+(const lightCell& other)
+    {
+        return lightCell(r+other.r,g+other.g,b+other.b);
+    }
+};
 struct renderer_test : public renderer_wrap {
 private:
     void colorizeTile(int x,int y)
@@ -175,34 +196,34 @@ private:
         float *fg = p->fg + tile * 4 * 6;
         float *bg = p->bg + tile * 4 * 6;
         float *tex = p->tex + tile * 2 * 6;
-        float v=opacity[tile];
+        lightCell light=lightGrid[tile];
         for (int i = 0; i < 6; i++) {
-            *(fg++) *= v;
-            *(fg++) *= v;
-            *(fg++) *= v;
+            *(fg++) *= light.r;
+            *(fg++) *= light.g;
+            *(fg++) *= light.b;
             *(fg++) = 1;
 
-            *(bg++) *= v;
-            *(bg++) *= v;
-            *(bg++) *= v;
+            *(bg++) *= light.r;
+            *(bg++) *= light.g;
+            *(bg++) *= light.b;
             *(bg++) = 1;
         }
     }
-    void reinitOpacity(int w,int h)
+    void reinitLightGrid(int w,int h)
     {
         tthread::lock_guard<tthread::fast_mutex> guard(dataMutex);
-        opacity.resize(w*h);
+        lightGrid.resize(w*h);
     }
-    void reinitOpacity()
+    void reinitLightGrid()
     {
-        reinitOpacity(df::global::gps->dimy,df::global::gps->dimx);
+        reinitLightGrid(df::global::gps->dimy,df::global::gps->dimx);
     }
 public:
     tthread::fast_mutex dataMutex;
-    std::vector<float> opacity;
+    std::vector<lightCell> lightGrid;
     renderer_test(renderer* parent):renderer_wrap(parent)
     {
-        reinitOpacity();
+        reinitLightGrid();
     }
     virtual void update_tile(int32_t x, int32_t y) { 
         renderer_wrap::update_tile(x,y);
@@ -223,10 +244,10 @@ public:
     };
     virtual void grid_resize(int32_t w, int32_t h) { 
         renderer_wrap::grid_resize(w,h);
-        reinitOpacity(w,h);
+        reinitLightGrid(w,h);
     };
     virtual void resize(int32_t w, int32_t h) {
         renderer_wrap::resize(w,h);
-        reinitOpacity(w,h);
+        reinitLightGrid(w,h);
     }
 };
\ No newline at end of file
diff --git a/plugins/rendermax/rendermax.cpp b/plugins/rendermax/rendermax.cpp
index 69709ac96..85232cde9 100644
--- a/plugins/rendermax/rendermax.cpp
+++ b/plugins/rendermax/rendermax.cpp
@@ -30,6 +30,7 @@ DFhackCExport command_result plugin_init (color_ostream &out, std::vector <Plugi
     commands.push_back(PluginCommand(
         "rendermax", "switch rendering engine.", rendermax, false,
         "  rendermax trippy\n"
+        "  rendermax truecolor red|green|blue|white\n"
         "  rendermax disable\n"
         ));
     return CR_OK;
@@ -56,10 +57,26 @@ static command_result rendermax(color_ostream &out, vector <string> & parameters
         installNew(new renderer_trippy(df::global::enabler->renderer),MODE_TRIPPY);
         return CR_OK;
     }
-    else if(cmd=="test")
+    else if(cmd=="truecolor")
     {
+        if(current_mode!=MODE_TRUECOLOR)
+        {
+            removeOld();
+            installNew(new renderer_test(df::global::enabler->renderer),MODE_TRUECOLOR);
+        }
         if(current_mode==MODE_TRUECOLOR && parameters.size()==2)
         {
+            lightCell red(1,0,0),green(0,1,0),blue(0,0,1),white(1,1,1);
+            lightCell cur=white;
+            lightCell dim(0.2,0.2,0.2);
+            string col=parameters[1];
+            if(col=="red")
+                cur=red;
+            else if(col=="green")
+                cur=green;
+            else if(col=="blue")
+                cur=blue;
+
             renderer_test* r=reinterpret_cast<renderer_test*>(df::global::enabler->renderer);
             tthread::lock_guard<tthread::fast_mutex> guard(r->dataMutex);
             int h=df::global::gps->dimy;
@@ -70,20 +87,22 @@ static command_result rendermax(color_ostream &out, vector <string> & parameters
             if(rad>cy)rad=cy;
             rad/=2;
             int radsq=rad*rad;
+            for(size_t i=0;i<r->lightGrid.size();i++)
+            {
+                r->lightGrid[i]=dim;
+            }
             for(int i=-rad;i<rad;i++)
             for(int j=-rad;j<rad;j++)
             {
                 if((i*i+j*j)<radsq)
-                    r->opacity[(cx+i)*h+(cy+j)]=(radsq-i*i-j*j)/(float)radsq;
+                {
+                    float val=(radsq-i*i-j*j)/(float)radsq;
+                    r->lightGrid[(cx+i)*h+(cy+j)]=dim+cur*val;
+                }
             }
             return CR_OK;
         }
-        else
-        {
-            removeOld();
-            installNew(new renderer_test(df::global::enabler->renderer),MODE_TRUECOLOR);
-            return CR_OK;
-        }
+       
         
     }
     else if(cmd=="disable")