Re: Might be beneficial
A blank keyboard already exists, although it's always been marketed at geeks who can touchtype so well they don't need key-caps, rather than design-conscious Apple users.
I have the version with lettering on, it's a really nice keyboard.
(Not to be confused with the keyboard belonging to an old flatmate of mine, who's [originally beige] keyboard was so filthy, it was only possible to read the lettering on some of the less used keys. Everything else was just encrusted with black dirt.
I don't live with him any more.)