Trade Interface

Just doing some concepts for UI designs at Stocktwits for mobile trading. Was researching through apps such as Scottrade and eTrade and was surprised to the lack of...visual excitement in these type of interfaces. Given that music players and weather apps look pleasing to the eye. I wanted to try to make "trading" visual to the eye.

Comments of improvement are much welcomed and asked for. Things like spacing, color, stroke weights, etc. Thank you!