CanvasRenderer: Set blending to normal when rendering background.

examples/js/renderers/CanvasRenderer.js

@@ -276,8 +276,8 @@ THREE.CanvasRenderer = function ( parameters ) {
 
 			if ( _clearAlpha > 0 ) {
 
-				setBlending( THREE.NormalBlending );
 				setOpacity( 1 );
+				setBlending( THREE.NormalBlending );
 
 				setFillStyle( 'rgba(' + Math.floor( _clearColor.r * 255 ) + ',' + Math.floor( _clearColor.g * 255 ) + ',' + Math.floor( _clearColor.b * 255 ) + ',' + _clearAlpha + ')' );
 
@@ -315,7 +315,10 @@ THREE.CanvasRenderer = function ( parameters ) {
 
 		if ( background && background.isColor ) {
 
-			setFillStyle( 'rgb(' + Math.floor( background.r * 255 ) + ',' + Math.floor( background.g * 255 ) + ',' + Math.floor( background.b * 255 ) + ')' );
+			setOpacity( 1 );
+			setBlending( THREE.NormalBlending );
+
+			setFillStyle( background.getStyle() );
 			_context.fillRect( 0, 0, _canvasWidth, _canvasHeight );
 
 		} else if ( this.autoClear === true ) {