Mobile menu icon color and transparency

Hi! Great theme, love it.

Two questions I hope you can answer:

1) On mobile phones, the mobile menu icon is almost not visible. The color is light grey so that on white background it’s difficult to see. Is it possible to change the color of the icon (three dashes) to black for better visibility? See details: http://i64.tinypic.com/5otkiq.png

2) On desktop the menu/header is transparent. Is it possible to have this for the mobile menu/header as well? Now it is white (see above link as well)

Thank you!

Ticket