Text color changes not working

I am trying to make the image description text to be white as the grey is too hard to read. But when I look at the style sheet it seems the caption is already white but this is not how it is displaying on my site.

Is there another place that is changing the text color to a dark grey that I can disable?

Please make sure you are editing class .nivo-caption, in file style.css around line 51.

Yes this I exactly what I am editing. Here is the link to the temporary location of the site:

(removed link as this was only a temp url for the site development)

On your site, I see description text is in white color.

Fixed it! It was a conflict with my template. My template was overriding the color

Thanks for your quick responses!