[Plugin: TDO Mini Forms] Changing Button Styles and adding a progress bar to uploads

Hi,
I was just wondering if it was possible to change the appearance of the buttons in a mini form and also if there is any possible way of adding a progress bar beside the upload field.
It’s a really great plugin but not knowing exactly how long an upload is going to take can be a bit of a pain and may put potential users off sharing content on the site.
and of course styling buttons and text fields to match the theme would be a bonus. I’m not sure where the buttons are created or where they’re pulled from but they’re pretty old school.

Any help or advice on this would be great.

Thanks very much

-Vin