Max,
we like the colors.. Maybe we can try other combination, with brighter colours, like, orange, yellow, .. We're free to help us!!
Other thing that we could experiment is sutil icons as $, or conection, or "collect money", or this signal of mobile.
Mobo is a website that users will download credits in "reais" (brazilian coin, like dollars) to go shopping in real stores and places.
We think we can get it with you !
Best Regards!