Examples: Fix broken GPU picking demo. (#25952)

* Examples: Fix broken GPU picking demo.

* Examples: Clean up.

examples/webgl_interactive_cubes_gpu.html

@@ -136,7 +136,7 @@
 
 					// give the geometry's vertices a color corresponding to the "id"
 
-					applyVertexColors( geometry, color.setHex( i ) );
+					applyVertexColors( geometry, color.setHex( i, THREE.NoColorSpace ) );
 
 					geometriesPicking.push( geometry );