If you can’t design, don’t be proud about it
I have to admit to being in awe of people who can both code and whip up a kick ass looking design. Particularly one that looks good and has good user experience. While I can code backends, I'd say my design skills are pretty paltry, particularly when it comes to doing things like lightbox overlays, fades, zoom in overlays and other jQuery goodness. But I'm not proud about it. It's something I'm kinda embarrassed about (and have a stack of reading material to deal with - that I'll get through one day).
So, loved Julio's Why Tony Stark is better than you post. Not just why you should get better at design, but why you're not all that and a bag of chips until you do, even if you are a rockstar dev.