Get Photoshop text color

@wellearn 

See how this works for you...

/* 
Text Layer Color to Swatch.jsx
v1.0 - 10th March 2024, Stephen Marsh
https://community.adobe.com/t5/photoshop-ecosystem-discussions/get-photoshop-text-color/td-p/14475583
*/

#target photoshop

// Store the current foreground colour
var savedForegroundColor = app.foregroundColor;

/*
Based on code from the late Michael Hale
https://community.adobe.com/t5/photoshop-ecosystem-discussions/how-to-get-color-info-of-text-in-text-layer/m-p/3342131
*/
var ref = new ActionReference();
ref.putEnumerated(stringIDToTypeID("layer"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt"));
var desc = executeActionGet(ref);
var list = desc.getObjectValue(charIDToTypeID("Txt "));
var tsr = list.getList(charIDToTypeID("Txtt"));
var info = [];

for (var i = 0; i < tsr.count; i++) {
     var tsr0 = tsr.getObjectValue(i);
     var textStyle = tsr0.getObjectValue(charIDToTypeID("TxtS"));
     var color = textStyle.getObjectValue(charIDToTypeID('Clr '));
     var textColor = new SolidColor();
     textColor.rgb.red = color.getDouble(charIDToTypeID('Rd  '));
     textColor.rgb.green = color.getDouble(charIDToTypeID('Grn '));
     textColor.rgb.blue = color.getDouble(charIDToTypeID('Bl  '));
}

// Set the foreground colour
var solidColorValue = new SolidColor();
solidColorValue.rgb.red = Math.round(textColor.rgb.red);
solidColorValue.rgb.green = Math.round(textColor.rgb.green);
solidColorValue.rgb.blue = Math.round(textColor.rgb.blue);
app.foregroundColor = solidColorValue;

// Set a new swatch
var c2t = function (s) {
    return app.charIDToTypeID(s);
};
var s2t = function (s) {
    return app.stringIDToTypeID(s);
};
var descriptor = new ActionDescriptor();
var descriptor2 = new ActionDescriptor();
var descriptor3 = new ActionDescriptor();
var reference = new ActionReference();
reference.putClass(s2t("colors"));
descriptor.putReference(s2t("null"), reference);
descriptor2.putString(s2t("name"), ~~textColor.rgb.red + "R " + ~~textColor.rgb.green + "G " + ~~textColor.rgb.blue + "B"); // Swatch name
descriptor2.putString(s2t("ID"), uuid()); // Create a faux random ID
descriptor2.putString(c2t("CCid"), "");
descriptor3.putDouble(s2t("red"), textColor.rgb.red);
descriptor3.putDouble(s2t("grain"), textColor.rgb.green);
descriptor3.putDouble(s2t("blue"), textColor.rgb.blue);
descriptor2.putObject(s2t("color"), s2t("RGBColor"), descriptor3);
descriptor.putObject(s2t("using"), s2t("colors"), descriptor2);
//descriptor.putBoolean(s2t("pushToDesignLibraries"), true); // Add to CC library
executeAction(s2t("make"), descriptor, DialogModes.ALL);

// Restore the original foreground colour
app.foregroundColor = savedForegroundColor;

function uuid() {
  /* https://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid */
  var chars = '0123456789abcdef'.split('');

  var uuid = [],
    rnd = Math.random,
    r;
  uuid[8] = uuid[13] = uuid[18] = uuid[23] = '-';
  uuid[14] = '4'; // version 4

  for (var i = 0; i < 36; i++) {
    if (!uuid[i]) {
      r = 0 | rnd() * 16;

      uuid[i] = chars[(i == 19) ? (r & 0x3) | 0x8 : r & 0xf];
    }
  }

  return uuid.join('');
}