Magazine Reference

NME is a general music magazine however, if it features pop artists or groups, the front cover will change and use vivid colours to emphasise the pop genre. NME also changes the colours of the masthead font so the whole magazine will be determined by the colours of the masthead. In this case, it is a bright pink masthead which is a pop related colour. 

Other examples of the masthead are here to prove how they change depending on the genre.