                                   { HSL , HUE   , LIGHT } ,  // 4
                                   { HSL , SAT   , LIGHT } }; // 5
    
+   // RGB
    for (i = 0; i < 3; i++)
    {
       copyIntArray( runParams[i].x.axisIntValues, ledBrightness, GRID_SIZE_X);
       copyIntArray( runParams[i].y.axisIntValues, ledBrightness, GRID_SIZE_X);
    }
    
-   float dHue = 360.0 / GRID_SIZE_X;
+   // HSL
+   float dHue = 60.0; // 360.0 / GRID_SIZE_X;
    for (i = 0; i < GRID_SIZE_X; i++)
    {
       runParams[3].x.axisIntValues[i] = (int) (i * dHue + 0.5);

                          ? rp.y.axisIntValues[y]
                          : 0));
                  s = (rp.xAxisSpace == SAT
                       ? rp.x.axisIntValues[x]
                       : (rp.yAxisSpace == SAT
                          ? rp.y.axisIntValues[y]
                          : 0.5));
                  l = (rp.xAxisSpace == LIGHT
                       ? rp.x.axisIntValues[x]
                       : (rp.yAxisSpace == LIGHT
                          ? rp.y.axisIntValues[y]
                          : 0.5));
                  rgb = hsl2rgb( h, s, l);
                  c = Color( rgb.r, rgb.g, rgb.b);

      ledBrightness[i] = v * 256; // Don't need to constrain; won't get close to 255.
   }

   // // Debug:
   // for (i = 0; i < GRID_SIZE_X; i++)
   // {
   //    pt = {i, 4 } ;
   //    rgb = hsl2rgb( 0, saturation[i], 0.5); // red/pink
   //    c = Color( rgb.r, rgb.g, rgb.b);
   //    strip.setPixelColor( point2seq( pt, org, gridSize), c);

   //    pt = {i, 3 } ; 
   //    rgb = hsl2rgb( 120, 0.5, lightness[i]); // greenish
   //    c = Color( rgb.r, rgb.g, rgb.b);
   //    strip.setPixelColor( point2seq( pt, org, gridSize), c);

   //    pt = {i, 2 } ;
   //    c = Color( 0, 0, ledBrightness[i]); // blue
   //    strip.setPixelColor( point2seq( pt, org, gridSize), c);
   // }
   // strip.show();
   // delay( 15000);

   runParamTuple runParams[6] = { { RGB , RED   , GREEN } ,  // 0
                                  { RGB , BLUE  , RED }   ,  // 1
