Swatch (Color)

Combine swatches with same value but different name

Function normalizeCMYK was written by Marc Autret. The source is here.

    function normalizeCMYK(/*Document*/doc,  swa,a,r,o,t,k,i)  
    // -------------------------------------  
    // Remove CMYK swatch duplicates and set every name in `C= M= Y= K=` form.  
    {  
        if( !doc ) return;  
      
        const __ = $.global.localize;  
        const CM_PROCESS = +ColorModel.PROCESS;  
        const CS_CMYK    = +ColorSpace.CMYK;  
      
        swa = doc.swatches;  
        a = doc.colors.everyItem().properties;  
        r = {};  
      
        // Gather CMYK swatches => { CMYK_Key => {id, name}[] }  
        // ---  
        while( o=a.shift() )  
        {  
            if( o.model != CM_PROCESS ) continue;  
            if( o.space != CS_CMYK ) continue;  
      
            t = swa.itemByName(o.name);  
            if( !t.isValid ) continue;  
      
            for( i=(k=o.colorValue).length ; i-- ; k[i]=Math.round(k[i]) );  
            k = __("C=%1 M=%2 Y=%3 K=%4",k[0],k[1],k[2],k[3]);  
            (r[k]||(r[k]=[])).push({ id:t.id, name:t.name });  
        }  
      
        // Remove dups and normalize names.  
        // ---  
        for( k in r )  
        {  
            if( !r.hasOwnProperty(k) ) continue;  
            t = swa.itemByID((o=(a=r[k])[0]).id);  
            for( i=a.length ; --i ; swa.itemByID(a[i].id).remove(t) );  
              
            if( k == o.name ) continue; // No need to rename.  
            try{ t.name=k }catch(_){}   // Prevent read-only errors.  
        }  
      
    };  
      
    normalizeCMYK(app.properties.activeDocument);  

Convert Spot colors to Process

var myCols = app.activeDocument.colors; 

for (i = 0; i < myCols.length; i++) 
   if (myCols[i].model == ColorModel.spot) 
      myCols[i].model = ColorModel.process;

Make color

var swatchRed = MakeColor("Red", ColorSpace.RGB, ColorModel.PROCESS, [255, 0, 0]);
var swatchGreen = MakeColor("Green", ColorSpace.RGB, ColorModel.PROCESS, [0, 255, 0]);

function MakeColor(colorName, colorSpace, colorModel, colorValue) {
	var doc = app.activeDocument;
	var color = doc.colors.item(colorName);
	if (!color.isValid) {
		color = doc.colors.add({name: colorName, space: colorSpace, model: colorModel, colorValue: colorValue});
	}
	return color;
}