I play Overwatch myself, and I get a solid 60FPS on this no problem. When playing Overwatch, in fact, my GPU only gets up to about 71C on Ultra settings, so this is well within its range,as the card has a max temperature of 90C before it starts throttling game performance down to prevent overheating. I also play Forza Apex (the Free to Play Forza, if you're not familiar with it) and that also runs well. I cannot say on the other games you mentioned, but I have also run Battlefield 4 on here, and while it did start running VERY hot (but that's due to how badly designed it is), it didn't cause any drops or was in any risk of damaging anything, so I would say that the others should also work as well.
In regards to the color, I'm afraid the only color options are a red and black and a black and red. However, this still looks pretty cool. The reason for the color change is that despite this model WAS an Alienware laptop at one point, it no longer is as Dell is slowly bringing Alienware into the Dell brand as Dell Gaming; so as Alienware still does exist as a brand, this is why Dell Gaming uses red right now and not the green that is associated with Alienware. Sorry if that fact disappoints!