Script Needed - Convert to Color Fill

@Tyler229371107i00 

The following script can be run after the first script, it will liquify raster layer masks using the previously used mesh, ignoring the layer data which was previously liquified using the first script.

/*
Liquify Selected Layers Masks using Last Mesh.jsx
v1.0, 8th January 2024, Stephen Marsh
*/

#target photoshop

function main() {

    // Save the current dialog display settings
    var savedDisplayDialogs = app.displayDialogs;
    app.displayDialogs = DialogModes.NO;

    // Capture the initial layer visibility and layer selection
    var currentLayersState = getLayersVisiblity();

    // Get the selected layers: courtesy of jazz-y
    var s2t = stringIDToTypeID;
    (r = new ActionReference()).putProperty(s2t('property'), p = s2t('targetLayersIDs'));
    r.putEnumerated(s2t('document'), s2t('ordinal'), s2t('targetEnum'));
    var lrs = executeActionGet(r).getList(p),
        sel = new ActionReference();

    // Loop over the selected layers: courtesy of jazz-y
    for (var i = 0; i < lrs.count; i++) {
        sel.putIdentifier(s2t('layer'), p = lrs.getReference(i).getIdentifier(s2t('layerID')));
        (r = new ActionReference()).putIdentifier(s2t('layer'), p);
        (d = new ActionDescriptor()).putReference(s2t("target"), r);
        executeAction(s2t('select'), d, DialogModes.NO);

        // Raster mask, vector mask not currently supported
        if (hasLayerMask() === true) {
            // Select the mask
            selectLayerCompositeChannel("mask");
            // Apply the last liquify filter mesh
            var idLqFy = charIDToTypeID("LqFy");
            var desc213 = new ActionDescriptor();
            var idLqMD = charIDToTypeID("LqMD");
            desc213.putString(idLqMD, app.preferencesFolder.fsName + "/" + "Liquify Last Mesh.psp");
            executeAction(idLqFy, desc213, DialogModes.NO);
        }
    }
    // Finish the loop

    // Restore the initial layer visibility and selection
    setLayersVisiblity(currentLayersState);

    // Restore the dialogs
    app.displayDialogs = savedDisplayDialogs;

    app.beep();
    alert("Script completed!");
}

// Single history stage undo
activeDocument.suspendHistory("Liquify Selected Layers Masks using Last Mesh.jsx", "main()");


///// FUNCTIONS /////

function hasLayerMask() {
    // From Adobe's Flatten All Masks.jsx
    var hasLayerMask = false;
    try {
        var ref = new ActionReference();
        var keyUserMaskEnabled = app.charIDToTypeID('UsrM');
        ref.putProperty(app.charIDToTypeID('Prpr'), keyUserMaskEnabled);
        ref.putEnumerated(app.charIDToTypeID('Lyr '), app.charIDToTypeID('Ordn'), app.charIDToTypeID('Trgt'));
        var desc = executeActionGet(ref);
        if (desc.hasKey(keyUserMaskEnabled)) {
            hasLayerMask = true;
        }
    } catch (e) {
        hasLayerMask = false;
    }
    return hasLayerMask;
}

function selectLayerCompositeChannel(chanPara) {
    // "RGB" | "mask"
    var s2t = function (s) {
        return app.stringIDToTypeID(s);
    };
    var descriptor = new ActionDescriptor();
    var reference = new ActionReference();
    reference.putEnumerated(s2t("channel"), s2t("channel"), s2t(chanPara));
    descriptor.putReference(s2t("null"), reference);
    descriptor.putBoolean(s2t("makeVisible"), false);
    executeAction(s2t("select"), descriptor, DialogModes.NO);
}

function getLayersVisiblity() {
    // by jazz-y
    var s2t = stringIDToTypeID,
        t2s = typeIDToStringID;
    (r = new ActionReference()).putProperty(s2t('property'), p = s2t('targetLayersIDs'));
    r.putEnumerated(s2t('document'), s2t('ordinal'), s2t('targetEnum'));
    var targetLayers = executeActionGet(r).getList(p),
        seletion = [],
        visiblity = {};
    for (var i = 0; i < targetLayers.count; i++) seletion.push(targetLayers.getReference(i).getIdentifier());
    (r = new ActionReference()).putProperty(s2t('property'), p = s2t('numberOfLayers'));
    r.putEnumerated(s2t('document'), s2t('ordinal'), s2t('targetEnum'));
    var len = executeActionGet(r).getInteger(p);
    for (var i = 1; i <= len; i++) {
        (r = new ActionReference()).putProperty(s2t('property'), p = s2t('layerSection'));
        r.putIndex(s2t('layer'), i);
        if (t2s(executeActionGet(r).getEnumerationValue(p)) == 'layerSectionEnd') continue;
        (r = new ActionReference()).putProperty(s2t('property'), p = s2t('layerID'));
        r.putIndex(s2t('layer'), i);
        var id = executeActionGet(r).getInteger(p);
        (r = new ActionReference()).putProperty(s2t('property'), p = s2t('visible'));
        r.putIndex(s2t('layer'), i);
        var visible = executeActionGet(r).getBoolean(p);
        visiblity[id] = visible;
    }
    return {
        selection: seletion,
        visiblity: visiblity
    };
}

function setLayersVisiblity(layersStateObject) {
    // by jazz-y
    var s2t = stringIDToTypeID;
    for (var a in layersStateObject.visiblity) {
        makeVisible = layersStateObject.visiblity[a] ? "show" : "hide";
        (r = new ActionReference()).putIdentifier(s2t('layer'), a);
        (d = new ActionDescriptor()).putReference(s2t('target'), r);
        executeAction(s2t(makeVisible), d, DialogModes.NO);
    }
    if (layersStateObject.selection.length) {
        var r = new ActionReference();
        for (var i = 0; i < layersStateObject.selection.length; i++)
            r.putIdentifier(s2t("layer"), layersStateObject.selection[i]);
        (d = new ActionDescriptor()).putReference(s2t("target"), r);
        d.putBoolean(s2t("makeVisible"), false);
        executeAction(s2t("select"), d, DialogModes.NO);
    } else {
        (r = new ActionReference()).putEnumerated(s2t("layer"), s2t('ordinal'), s2t('targetEnum'));
        (d = new ActionDescriptor()).putReference(s2t('target'), r);
        executeAction(s2t('selectNoLayers'), d, DialogModes.NO);
    }
}

The final step will be to combine both scripts into one.

Alternatively, if someone can write a script to take a liquified edit and apply it to a selection of multiple layers, that would be an even better solution so I don't have to use CSP. Still, I've contacted a scripter before, and they said Adobe doesn't let you do that. I'm an artist, so I have no idea if that is true.