[SOLVED] Youtube Plane has weird emissive effect?

As I have tried to incorporate a plane with a youtube-video - as seen here:
https://developer.playcanvas.com/en/tutorials/youtube-in-3d-scenes/

Within the update-material code, I have tried to alter the blendtype amongst other things:

YoutubePlane.prototype.onYoutubeApiReady = function () {    
    var self = this;
    
    var element = null;
    var youTubeWrapper = document.createElement('div');
    youTubeWrapper.id = this.entity.getGuid();
    youTubeWrapper.style.border = '0px';
    
    if (this.videoId) {
        element = document.createElement('div');    
        element.style.border = '0px';
        
        element.appendChild(youTubeWrapper);
    } 
    
    this._css3Plane = new pc.Css3Plane(element, this.entity, this.pixelsPerUnit);

    if (this.videoId) {
        this._player = new YT.Player(this.entity.getGuid(), {
            height: '100%',
            width: '100%',
            events: {
                'onReady': function() {
                    self.entity.fire('youtubeready', self._player);
                 }
            }
        });
        
        // Workaround to get iOS to play videos inline and Android to play videos unmuted
        var iframe = document.getElementById(self.entity.getGuid());
        iframe.src = 'https://www.youtube.com/embed/' + this.videoId + '?enablejsapi=1&controls=0&playsinline=1&origin=' + encodeURI(window.location.origin);
    }

    var material = new pc.StandardMaterial();
    material.depthWrite = true;
    material.redWrite = false;
    material.greenWrite = false;
    material.blueWrite = false;
    material.alphaWrite = false;
    material.blendType = pc.BLEND_NONE; // have tried to alter this line many times
    
    // Extra tries as well without any luck:
    material.useLighting = false;
    material.useSkybox = false; material.twoSidedLighting = false; material.useGammaTonemap = false; material.useFog = false;
    material.opacity = 0;
   material.reflectivity =0;
   
    material.update();

    this.entity.model.material = material;

    this.on('destroy', function() {
        this._css3Plane.disable();
    }, this);
    
    this.on('enable', function() {
        this._css3Plane.enable();
    }, this);
    
    this.on('disable', function() {
        this._css3Plane.disable();
    }, this);
};

Looks like it’s related to the clear color. Setting it to black removes the white glow effect:

Odd that it does affect the transparent canvas as I wouldn’t have expected so. Don’t forget the the youtube plane is not actually in the 3D world. Its on the document page.

No idea how you would get around it.

Perfect … the blackness worked - thx