CSS assistant required to make some text darker

Can you please help me with some CSS, the text on the gallery page at the bottom of each image
http://www.littleriverbnb.com.au/?page_id=83#prettyPhoto

One the booking step form when the guest types in the guest details
http://www.littleriverbnb.com.au/?page_id=9

And finally the slider on the homepage green trans background needs to be darker so the white text is easier to see
http://www.littleriverbnb.com.au

It looks fine on my Mac however on less quality screens you can barely read it so if you can help me out with some CSS that would be greatly appreciated.

I have given you access, cheers Kinnear