Wallet will be definetly "billetera"
Definitely... in your country, maybe, because in Spain "wallet" is "cartera"; apparently, "billetera" is more common in many parts of America for "wallet". In the UK, a purse is a wallet.
in Spain, the American "purse", or "handbag" is "bolso".
And the same can be said about "marrón", which is the most common term for "brown" in Spain and many other Latin-American countries, but "café" is more used in Chile, Ecuador, Mexico and Uruguay. There is also "castaño", which although it was the original term for brown, now it is used mainly for brown hair.
"Purple" is "púrpura", because both clearly share the same etymology: a dark reddish colour close to violet. "Morado" is practically the same colour, and it is used to refer to "black eyes"; "púrpura" is more poetic, and used to refer to blood and the colour of the cardinals' robes.
"Dorado" is golden or gilded.