Another solution which I've seen used is to stick with the white text until it comes up against a bit of yellow, and then change it to dark. It's not a technique I really like, though, as it can mean changing colour halfway through a line, and sometimes even mid-word, and can be pretty distracting.

The key function of page design like this is to lead a reader through the text easily - and the key characteristic is that it doesn't look like it's been designed. So many magazines now have "show-off" graphics that you just have to give up on reading because it becomes too difficult.