How to change a color to None?

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Hi,
Can anyone tell my how I can take an existing indicator I have and change one of the colors to None so that particular line will not show?

I would like to change something like:

#property indicator_color1 LightSeaGreen

#property indicator_color1 None

but that doesn't work. I've tried changing it to 255.255.255 - and that doesn't work either.

Is there a simple way to do this and I an just not getting it?

Thanks,

Mike
 
To the background color, black? I think that's the only way possible. Or just change it to some extreme value so it won't show up on the chart. (Or both)
 
You can change a style of indicator in init() function. For example:

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   IndicatorBuffers(8);
 
   SetIndexStyle(0,DRAW_ZIGZAG);
   SetIndexBuffer(0,HighSwings);
   SetIndexEmptyValue(0,0.0);
   SetIndexLabel(0,"HighSwing");
 
   SetIndexStyle(1,DRAW_ZIGZAG);
   SetIndexBuffer(1,LowSwings);
   SetIndexEmptyValue(1,0.0);
   SetIndexLabel(1,"LowSwing");
 
   SetIndexBuffer(2,HighsBuffer);
   SetIndexLabel(2,"HighActive");
   SetIndexEmptyValue(2,0.0);
 
   SetIndexBuffer(3,LowsBuffer);
   SetIndexLabel(3,"LowActive");
   SetIndexEmptyValue(3,0.0);
 
 
   if (ShowHiLo)
      {
      SetIndexStyle(2,DRAW_ARROW);
      SetIndexArrow(2,159);
      SetIndexStyle(3,DRAW_ARROW);
      SetIndexArrow(3,159);
      }
   else
      {
      SetIndexStyle(2,DRAW_NONE);
      SetIndexStyle(3,DRAW_NONE);
      }
         
   SetIndexBuffer(4,UpCloseOutSideBuffers);
   SetIndexStyle(4,DRAW_ARROW);
   SetIndexArrow(4,108);
   SetIndexLabel(4,"UpClose");
   SetIndexEmptyValue(4,0.0);
 
   SetIndexBuffer(5,DownCloseOutSideBuffers);
   SetIndexStyle(5,DRAW_ARROW);
   SetIndexArrow(5,108);
   SetIndexLabel(5,"DownClose");
   SetIndexEmptyValue(5,0.0);
 
   SetIndexBuffer(6,Needles);
   //SetIndexStyle(6,DRAW_NONE);
   SetIndexEmptyValue(6,0.0);
//   SetIndexStyle(6,DRAW_ARROW);
//   SetIndexArrow(6,108);
 
   SetIndexBuffer(7,TrendBuffer);
   SetIndexEmptyValue(7,0.0);
 
   for (int i=Bars-1; i>=0; i--)
      {
      HighSwings[i]=0.0;
      LowSwings[i]=0.0;
      HighsBuffer[i]=0.0;
      LowsBuffer[i]=0.0;
      TrendBuffer[i]=0.0;
      UpCloseOutSideBuffers[i]=0.0;
      DownCloseOutSideBuffers[i]=0.0;
      }
   SwingHigh=0.0;
   SwingLow=0.0;
   prevSwing=0;
   LastSwing=0.0;
   myBars=0;
   lowCounter=0;
   highCounter=0;
   Comment("\n","GannSwings ",version," kind=",kind);
//----
   return(0);
Full code attached.
Files:
gannswingsxvii.mq4  16 kb
 
move such lines
SetIndexStyle(0,.........., CLR_NONE);

from init(){
to start() {
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