GM Media site recently posted stick photos of 2014 V models, not sure if any of these truly represent new Red and Grey color options but figured those who own current red or gray would be able to judge best.
http://http://media.gm.com/content/media/us/en/gm/photos.detail.html/content/Pages/galleries/us/en/vehicles/cadillac/2014/2014-cts-v-coupe.html
http://http://media.gm.com/content/media/us/en/gm/photos.detail.html/content/Pages/galleries/us/en/vehicles/cadillac/2014/2014-cts-v-sedan.html
http://https://media.gm.com/content/media/us/en/gm/photos.detail.html/content/Pages/galleries/us/en/vehicles/cadillac/2014/2014-ctsv-sport-wagon.html
http://http://media.gm.com/content/media/us/en/gm/photos.detail.html/content/Pages/galleries/us/en/vehicles/cadillac/2014/2014-cts-v-coupe.html
http://http://media.gm.com/content/media/us/en/gm/photos.detail.html/content/Pages/galleries/us/en/vehicles/cadillac/2014/2014-cts-v-sedan.html
http://https://media.gm.com/content/media/us/en/gm/photos.detail.html/content/Pages/galleries/us/en/vehicles/cadillac/2014/2014-ctsv-sport-wagon.html