RossB on "Twenty Twelve: how to change hyperlink color on pages"

URL: http://www.perthpunk.com
Theme: Twenty Twelve child

I want to change the link colour from the default light grey to something a bit more easily readable. However, I only want to change the color of hyperlinks text within a page, without automatically also changing the color of the header text or page title.

I've applied every bit of coding advice I can find on these Support forums, and by googling, and nothing works without also affecting the header and page titles (and sidebar widget links, for that matter, although I don't mind if these change to the same color as the hyperlinks in page content).

If anyone has any suggestions, would be much appreciated.

Cheers
Ross