Change color values for existing spot color in indesign, javascript

Hi Yulia,

how did you define your spot color that you want to change?

What I see from your code: The name of your color is "red".

What are all other properties?

BTW: What do you like to prevent with your try/catch ?

I think, that's not needed. You could always test if the color is there with isValid.

// That line cannot throw an error except there is no document open:
var myColor = app.documents[0].colors.itemByName("red");
// Is it really there?
if( myColor.isValid )
{
     myColor.properties =
     {
          model : ColorModel.SPOT ,
          space : ColorSpace.CMYK ,
          colorValue : [0,100,80,0]
     }
}

However, it is possible that you cannot change your spot color because it has a special flag that is not scriptable.

You also said, that you need to change that temporarily.

So I think it's better to do a new spot color with your temp values and map the new one to the old one using the ink object:

( function()
{
if( app.documents.length == 0 ){ return };
var doc = app.documents[0];
var tempSpotColorName = "tempRed" ;
var nameOfSpotToMap = "red" ;
// If the temp color is already there we remove it and add it anew:
var tempSpotColor = doc.colors.itemByName( tempSpotColorName );
if( tempSpotColor.isValid ){ tempSpotColor.remove() };
tempSpotColor = app.documents[0].colors.add
(
    {
         name : tempSpotColorName ,
         model : ColorModel.SPOT ,
         space : ColorSpace.CMYK ,
         colorValue : [ 0,100,80,0 ]
    }
);
// The old spot color is mapped to the new one:
doc.inks.itemByName( nameOfSpotToMap ).aliasInkName = tempSpotColorName ;
// To show this with objects using the color you have to turn on Overprint Preview:
doc.layoutWindows[0].overprintPreview = true ;
}() )

Regards,
Uwe

Hi,

Try this!..

var myDoc = app.activeDocument;
var myColor = myDoc.colors.itemByName("red");  
    try{
         if(myColor.space ==ColorSpace.CMYK){
             if(myColor.name=="red")
             
             {
                 myColor.model=ColorModel.SPOT;
                 var myCV = myColor.colorValue=[0,100,80,0];
                 myColor.name = "red";
                 }
             }
         }
         catch(e)
         
         {alert(e)}

Thanks,

Prabu G

Hi Yuila,

I hope this will be helpful to you.

Re: Specific Colour changing Script from RGB to CMYK

Thanks,

Prabu G