Those analog sticks and the touch pad ruin the overall look of the controller IMO. Also think the back grip having a different color but seeping into the bottom front of the handle prongs looks incredibly tacky.
With controllers looks obviously aren't the most important thing, but I don't ever think the Dualshock 4 is going to be an attractive looking controller. Shame considering the console itself looks really nice, to the point where the aesthetics of the console and controller really clash. They don't look like part of the same package to me. The white DS4 is the only iteration that I've thought looked alright.