Script to change a color in all layers of a PSD file to another color?

Question

Is it possible to loop through all layers (there are too many layers) and replace one color with another. Need automated approach, script or simple action.

Loop through all layers{
    Change Fill color A to X
    Change Text color A to X
}

Answer 1

Changing text colour A to X is straight forward (provided you have no groups than it get a bit more complex):

var colourA = "28bd98"; 
var colourY = "ff00ff"; 


changeFontColour(colourA, colourY);



function changeFontColour(X,Y)
{
  var numOfLayers = app.activeDocument.layers.length;

  // main loop
  for (var i = numOfLayers -1; i >= 0  ; i--)
  {
    var thisLayer = app.activeDocument.layers[i];

    if (app.activeDocument.layers[i].kind == 'LayerKind.TEXT')
    {
      var currentFontCol = getFontColour(thisLayer);

      // alert(currentFontCol + "\n" + X);

      if (currentFontCol.toUpperCase() == X.toUpperCase())
      {

        var myColour = new SolidColor();
        var RGB = HEXtoRGB(Y);
        myColour.rgb.red = RGB[0];
        myColour.rgb.green = RGB[1];
        myColour.rgb.blue = RGB[2];

        // replace text colour
        thisLayer.textItem.color = myColour;
      }
    }
  } //end of loop
}

function getFontColour(alayer)
{
  var fontColor = alayer.textItem.color;
  return fontColor.rgb.hexValue;
}

function HEXtoRGB (hex)
{
  var c = 1
  if (hex.charAt(0) != "#") c = 0;

  var r = parseInt(hex.substring(c,c+2),16)
  var g = parseInt(hex.substring(c+2,c+4),16)
  var b = parseInt(hex.substring(c+4,c+6),16)
  return [r, g, b];
}