Up/down arrows support

Hi! I can't live without Paste! It's amazing and I use it daily.

Simple navigation feature request below for Mac OS X.

When I open paste, I can go left/right easily with keys. However I use the folders feature a lot and so it makes me click each header to open them. I want to avoid touching my mouse wherever possible.

Please add up/down arrows to allow us to navigate to the folders, then we can press enter to choose a folder then left/right to choose the clipboard thing would be so simple and great.

Bonus suggestion 1: Option + Left/Right to jump 5 items at a time. Some of my folders have many many items, so that would save a lot of time. I already enjoy the feature of Cmd+# keys to choose the most recent 9 items. This would just take that navigation up a notch.

Bonus suggestion 2: More colors please!

Thanks!!!