1. "Choose the Parent Folder": let the folder path /root. Example: http://my-site.com/download/
1a. What i mean is this: let us, as users, to choose where the folder with the files/images/whatever wanna be
2. Do not use colors for raws.. let us choose. Some of us have different module styles (css styled) and your colors overrides the styles.
Other than that, it's one great extension. Congratulations!