...you could actually get these? Wow. I never even noticed.
But then I can't anyway see the point in such a thing. Who buys/shows off a games console, DVD player, whatever as a decorative piece? Only the incredibly vain, or people who live in Ikea catalogues. The rest of us either a/ don't give a crap what the mess under the TV looks like, b/ get a nice cabinet to stash it all in so it's reasonably accessible and organised, but you don't have to look at that stuff all the time.
After all, looking pretty in-the-plastic is not its raison d'etre. It's making pretty images on the HDTV that's a few feet higher up and on entirely different sightline.
Wouldn't be surprised if the regular different-colour ones (and PS3s, Wiis similarly) aren't doing all that great shakes, particularly as they tend to cost more for what is, basically, the bother of the same components having a box wrapped around them which had a different low-cost dye injected into its raw plastic at the factory.
More understandable for phones, portable consoles, even TVs. It's something you, and people around you are going to look directly at and see a lot more often. Plus with the pocketable devices, there's more chance of dropping it, losing it, getting yours and a family member or friend's mixed up. Personalisation both has greater aesthetic and practical benefit. Even I've daubed a bit of correction fluid on my otherwise generic-looking memory stick to make it stand out from the other standard issue ones at work.
My brother is the only person I know, mind, who's actually ever much changed his phone fascia, and even then he quickly bored of his cheap re-shell, couldn't find anything else that took his fancy... so gave the original flat grey shell a custom paintjob with his Warhammer paints and used that until he changed handset. Hardly anyone else seems to have even given it much thought - they'll pick a model whose appearance they already like (or, they buy an iphone...) and stick with it, rather than picking a customisable but otherwise so-so one then modding it to be perfect.
My phone actually came with a selection of rear covers (yes, rear... erm? the front is plain white, no choices... the whole thing is full of bad, committee-led ideas, though), from which I chose the least ugly (the slate-blue, rather than puke green or diahorrea brown) and - amazingly - it auto-changed the onscreen theme to match. Some people have different favourite colours I guess, though my money's on most people with this model plumping for blue because the other pack-in covers are hideous, all the others are expensive, and you can't paint it because the theme will clash. I don't actually give too much of a crap, though. I don't pay the cover much attention. It's a phone, an interface that I only visually interact with via the screen, and more or less touchtype on the keypad. Everything around it is distraction.
I'd consider $5 on a new all-over cover for it to be a bit of a bling treat. $10 to be extravagant. Any amount of money on a stay-at-home console to be completely wasted. $30 on either?! You know what I could get for that money, that would actually be of use or at least properly attractive appearance??
For the sake of full disclosure I have a similar issue with browser skinning / firefox personas / etc, and windows themes (after a brief flush with them in the 90s that as far as I can tell pissed off every single person around me, except my juvenile self). What exactly is the point? I spend as little time staring at the interface elements of my operating system / web browser as possible. The content is the important thing. When I actually have to visually interact with the control system (rather than keyboard shortcuts, mouse gestures etc), it needs to be simple, clear, and familiar. So, bogstandard browser theme, and "windows classic" in one of the more soothing but not flat grey default schemes, ta.
Firefox keeps trying to force me to give personas a go. I'd like a nice big button that can be pushed to say "shove it up your arse and let me get on with my life".