yeah, I sometimes get white mirrors in P7, but I click some setting and it goes away. not certain which setting. anyway, the above image is a render using sixus' scrum and bill's skydome method. the skydome is the P7 hi-res ball scaled to 100000%, with the cloud node attached to the diffuse colour. scrum is holding an hi-res ball with the reflect node, which is reflecting the skydome, scrum, and the floor. the main light is IBL/AO, using the cloud node as the image source, in place of a light probe or hdri. there is a dim inf-lite in upper left front for fill (no shadows). the IBL renders alot faster with ray-traced or depth-mapped shadows, but I eschewed them in favour of AO.