Dropdown options disappear on hover

[Josh McKearin]

The font color and background color of an option in :hover state are too close. In the screenshot below, "XMR" option is in the :hover state and you can't see it.

EDIT: You can technically see it if viewing from a monitor with the brightness turned down. I believe there should, at least, be more contrast.

[James Dimitrov]

Fixed #9. Fixed #11

→ <<cset 557faec60a90>>