Switch ballshooter and cubes demos to use sRGB output encoding, which massively helps the controllers visibility.

examples/webxr_vr_ballshooter.html

@@ -83,6 +83,7 @@
 				renderer = new THREE.WebGLRenderer( { antialias: true } );
 				renderer.setPixelRatio( window.devicePixelRatio );
 				renderer.setSize( window.innerWidth, window.innerHeight );
+				renderer.outputEncoding = THREE.sRGBEncoding;
 				renderer.xr.enabled = true;
 				document.body.appendChild( renderer.domElement );
 

examples/webxr_vr_cubes.html

@@ -91,6 +91,7 @@
 				renderer = new THREE.WebGLRenderer( { antialias: true } );
 				renderer.setPixelRatio( window.devicePixelRatio );
 				renderer.setSize( window.innerWidth, window.innerHeight );
+				renderer.outputEncoding = THREE.sRGBEncoding;
 				renderer.xr.enabled = true;
 				container.appendChild( renderer.domElement );