Thank you for your reply. I have tried the CSS above and it does indeed disable the changing of the header image colour when clicked. Naturally this disables the effect on the background of the text links as well (which I could easily live with) so it is therefore identical to what happens if I just leave Accent Colour #2 null. However, I am still left with the problem of the text links having a white colour when clicked, and this makes them invisible against a white background. I cannot see any way to change the on-click link colour in the Nirvana settings?