how can i refresh my shoes?

Helo all! i need you guys to help me figure out something:

I have 2 white shoes that i love, and i wore them through this year at school, I really like these shoes, they are really confortable nike's one air, and one shox.

Unfortunately I can not aford shoes for my new semester, and i was thinking how could i refresh them??> they are leather shoes, that need a lift!

what can i do to them in order to give them a fresh look?

- I have soaked them on clorox, and the shoelaces and the inside is brand new, now the outside needs something to make them look new again!

what can i use? i really have no idea, since i never had to do that before

but due to the huge amount of books that i needed to get for January, i was left empty handed!!!!

is there any kind of tint, paint, paste, whitener, anything like that, that i could use???

thanks guys!