First post updated!
I fixed the voucher issue

Now you get 255 vouchers if you Press SELECT+DOWN-ARROW!
I'm still struggling with the rotate-colors for the helper colors.
Stay tuned

More features will be added from time to time.
@ZOOT: How this works?
Well... there's a thread here at gbatemp. NTR CFW Release. You can find infos there.
Quick explained:
get NTR running on your 3ds, download my plugin, put it in sd-card\plugin\0004001000022800\cheat.plg

after loading ntr on your console, you may start the game and press the hotkeys.
It does reduce the amount of coins you have. At the point you reach 0 real coins, it still works (and doesn't go below 0 real coins).
let me try to explain:
game starts -> "nand coin save file"
value is read and stored in ram.
in game when you buy something, the game checks the ram-value to verify if you can spend the coins.
if you have the minimum amount of needed coins in ram, the game executes the transaction.
after the transaction, the game reduces the coin amount in the ram + it opens the "nand coin save file", and makes a simple math calculation of "get the current value in the file, and take X coins from it. FAIL IT if the result will be below 0)
So yeah, you lose the physical coins. but as soon as you'Re in miiplaza, you can fake the coins through the plugin.