[jkestner]

That's called double shot injection molding. The cheaper Nokia Lumia phones use it to great effect. A bunch of products also use clear plastic with the inside surface painted to get a similar depth effect (think Apple Magic Mouse).

[cannam]

I actually almost mentioned the Nokia phones - the Lumia 620 with its exchangeable double-shot rounded plastic backs (and near-perfect form factor in hand, with a 3.8" screen) may be the nicest phone I've ever used, as a pure physical object, despite being among the cheapest. Pity about the screen though - and, some might argue, what appeared on it, at least in terms of apps.

This sort of design for joy rather than for prestige, reassurance, solidity, sensation of quality engineering, etc is what you hope for from Nintendo. They do have a pretty decent track record at it, and their most successful designs in that respect are also some of their biggest hits.

[jkestner]

Yeah, I think the iPhone 5c, especially in combination with those punched-hole cases, hit this spot to a degree, but the market apparently disagreed and they went back to prestige.

Teenage Engineering does joy better than anyone else I can think of, but it's impressive when the huge companies do any of it. Remember when dumb mobile phones became commodity enough that industrial designers really got creative? Thinking KDDI in Japan, especially the Infobar. Some manufacturers still do that but don't have the software chops to complete the thought.