How to update Solid Color adjustment layer color using Photoshop scripting?

Hi @Stephen Marsh . I am trying to use this code and take it one step further. I'd like to generate a random solid fill color do you know if this is possible? I've googled and ChatGPT'd myself in cicrles. 

@Stephen Marsh Hi stephen, hope all is well,

I've been trying to incorporate your suggestion to my script but something seems to not be working properly. So, It does target the solid color layer and it allows me to edit it with the color picker, but cant make it update live the color of the layer as I move the color picker accross different colors in the document, as it does when you click on the solid color fill thumbnail layer.

Here is the code i have. Can you check the function updateColorFillLayer and pickColor please? something may be off. If its too much of an ask, i;d understand. Cheers! but honestly, seriously looking forward to make this happen on this code...

function main() {
    var psdFolder = Folder.selectDialog("Select the folder containing PSD files:");
    var imgFolder = Folder.selectDialog("Select the folder containing image files:");
    var exportFolder = Folder.selectDialog("Select the folder for exported files:");

    if (!psdFolder || !imgFolder || !exportFolder) {
        alert("No folder selected. Exiting...");
        return;
    }

    var psdFiles = psdFolder.getFiles("*.psd");
    var imgFiles = imgFolder.getFiles(/\.(jpg|jpeg|png|tif|tiff|bmp|gif)$/i);

    for (var i = 0; i < psdFiles.length; i++) {
        var psdFile = psdFiles[i];
        var doc = open(psdFile);

        var colorFillLayer = findLayerByName(doc, "color");

        for (var j = 0; j < imgFiles.length; j++) {
            var imgFile = imgFiles[j];

            // Find both smart object layers
            var layerVertical = findLayerByName(doc, "smart_object_vertical");
            var layerSquare = findLayerByName(doc, "smart_object_square");

            // Calculate aspect ratio
            var aspectRatio = getImageAspectRatio(imgFile);

            // Choose the appropriate smart object layer based on the aspect ratio
            var layerName = aspectRatio < 1 ? "smart_object_vertical" : "smart_object_square";

            // Set the visibility of both layers accordingly
            if (layerName === "smart_object_vertical") {
                layerVertical.visible = true;
                layerSquare.visible = false;
            } else {
                layerVertical.visible = false;
                layerSquare.visible = true;
            }

            var layer = findLayerByName(doc, layerName);
            if (layer) {
                replaceSmartObjectContent(doc, layer, imgFile);
            }

            // Pick the color and update the color fill layer
            var pickedColor = pickColor();
            if (pickedColor) {
                updateColorFillLayer(doc, colorFillLayer, pickedColor);
            }

            var fileName = psdFile.name.replace(".psd", "_" + imgFile.name);
            var saveFile = new File(exportFolder + "/" + fileName);

            // Check if the image has been processed already to not process again in the same folder
            if (saveFile.exists) {
                continue;
            }

            setDocumentResolution(doc, 300);
            saveAsPNG(doc, saveFile);
        }

        // Close the document and don't save changes
        doc.close(SaveOptions.DONOTSAVECHANGES);
    }
}

function getImageAspectRatio(file) {
    var tempDoc = open(file);
    var aspectRatio = tempDoc.width / tempDoc.height;
    tempDoc.close(SaveOptions.DONOTSAVECHANGES);
    return aspectRatio;
}

function setDocumentResolution(doc, resolution) {
    var originalRulerUnits = app.preferences.rulerUnits;
    app.preferences.rulerUnits = Units.PIXELS;

    var originalWidth = doc.width;
    var originalHeight = doc.height;
    var resampleMethod = ResampleMethod.AUTOMATIC;
    doc.resizeImage(originalWidth, originalHeight, resolution, resampleMethod);

    app.preferences.rulerUnits = originalRulerUnits;
}


function findLayerByName(doc, name, layerSet) {
    if (!layerSet) layerSet = doc.layers;
    
    for (var i = 0; i < layerSet.length; i++) {
        var layer = layerSet[i];
        if (layer.name === name) {
            return layer;
        }
        if (layer.typename === "LayerSet") {
            var foundLayer = findLayerByName(doc, name, layer.layers);
            if (foundLayer) {
                return foundLayer;
            }
        }
    }
    return null;
}





function updateColorFillLayer(doc, colorFillLayer, fillColor) {
    var activeLayer = doc.activeLayer;
    doc.activeLayer = colorFillLayer;

    function s2t(s) {
        return app.stringIDToTypeID(s);
    }

    

    var descriptor = new ActionDescriptor();
    var descriptor2 = new ActionDescriptor();
    var descriptor3 = new ActionDescriptor();
    var reference = new ActionReference();

    reference.putEnumerated(s2t("contentLayer"), s2t("ordinal"), s2t("targetEnum"));
    descriptor.putReference(s2t("null"), reference);

    descriptor3.putDouble(s2t("red"), fillColor.rgb.red);
    descriptor3.putDouble(s2t("grain"), fillColor.rgb.green);
    descriptor3.putDouble(s2t("blue"), fillColor.rgb.blue);

    descriptor2.putObject(s2t("color"), s2t("RGBColor"), descriptor3);
    descriptor.putObject(s2t("to"), s2t("solidColorLayer"), descriptor2);

    executeAction(s2t("set"), descriptor, DialogModes.NO);

    doc.activeLayer = activeLayer;
}



function saveAsPNG(doc, saveFile) {
var pngOptions = new PNGSaveOptions();
pngOptions.compression = 2; // Change this value to control the compression level (0-9)
pngOptions.interlaced = false;
doc.saveAs(saveFile, pngOptions, true, Extension.LOWERCASE);
}
function replaceSmartObjectContent(doc, layer, imgFile) {
    doc.activeLayer = layer;
    if (layer.kind === LayerKind.SMARTOBJECT) {
        var idplacedLayerReplaceContents = stringIDToTypeID("placedLayerReplaceContents");
        var desc = new ActionDescriptor();
        desc.putPath(charIDToTypeID("null"), imgFile);
        try {
            executeAction(idplacedLayerReplaceContents, desc, DialogModes.NO);
        } catch (e) {
            alert("Error: " + e.message);
        }
    } else {
        alert("The specified layer is not a Smart Object.");
    }
}


function pickColor() {
    // Check if the active layer is a Solid Color adjustment layer
    if (activeDocument.activeLayer.kind == LayerKind.SOLIDFILL) {
        // Get the current color of the Solid Color adjustment layer
        var currentColor = interactiveSetColorFill();

        // Set the initial color of the color picker to the current color
        app.foregroundColor.rgb.red = currentColor[0];
        app.foregroundColor.rgb.green = currentColor[1];
        app.foregroundColor.rgb.blue = currentColor[2];
    }

    var colorPicker = new Window("dialog", "Choose a color");
    colorPicker.orientation = "column";
    colorPicker.alignChildren = "left";

    var colorPickerPanel = colorPicker.add("panel", undefined, "Color");
    colorPickerPanel.alignment = "fill";
    colorPickerPanel.margins = 10;

    var colorPickerGroup = colorPickerPanel.add("group");
    colorPickerGroup.orientation = "row";
    colorPickerGroup.alignChildren = "center";
    colorPickerGroup.margins = 0;

    colorPickerGroup.add("statictext", undefined, "Current color:");
    var colorSample = colorPickerGroup.add("panel", undefined, "");
    colorSample.size = [40, 20];
    colorSample.graphics.backgroundColor = colorSample.graphics.newBrush(colorSample.graphics.BrushType.SOLID_COLOR, [app.foregroundColor.rgb.red / 255, app.foregroundColor.rgb.green / 255, app.foregroundColor.rgb.blue / 255]);

    colorPicker.add("button", undefined, "Choose color", {name: "ok"});
    colorPicker.add("button", undefined, "Cancel", {name: "cancel"});

    if (colorPicker.show() === 1) {
        app.showColorPicker();
        return app.foregroundColor;
    } else {
        return null;
    }
}
    

/*function pickColor() {
    var colorPicker = new Window("dialog", "Choose a color");
    colorPicker.orientation = "column";
    colorPicker.alignChildren = "left";

    var colorPickerPanel = colorPicker.add("panel", undefined, "Color");
    colorPickerPanel.alignment = "fill";
    colorPickerPanel.margins = 10;

    var colorPickerGroup = colorPickerPanel.add("group");
    colorPickerGroup.orientation = "row";
    colorPickerGroup.alignChildren = "center";
    colorPickerGroup.margins = 0;

    colorPickerGroup.add("statictext", undefined, "Current color:");
    var colorSample = colorPickerGroup.add("panel", undefined, "");
    colorSample.size = [40, 20];
    colorSample.graphics.backgroundColor = colorSample.graphics.newBrush(colorSample.graphics.BrushType.SOLID_COLOR, [app.foregroundColor.rgb.red / 255, app.foregroundColor.rgb.green / 255, app.foregroundColor.rgb.blue / 255]);

    colorPicker.add("button", undefined, "Choose color", {name: "ok"});
    colorPicker.add("button", undefined, "Cancel", {name: "cancel"});

    if (colorPicker.show() === 1) {
        app.showColorPicker();
        return app.foregroundColor;
    } else {
        return null;
    }
}
*/

main();

Hi Stephhen,

Appreciate you helping me out and combining both scripts to complete it.

I tried it and works great, i will now try implementing it into my current longer script.

One question though, ideally, i would like the solid color adjustment layer to reflect the chosen color from the color picker window,  Live, in as its default functionality when you double click on the solid color layer thumbnail.

right now, the script prompts me to pick a new color, but only is reflected after one click OK.

Is this possible to achieve? thanks!