I have been noticing a disturbing trend in custom interface design of third party applications for Mac OS X. As it is no longer an exception for software developers to build interface elements that are entirely unique to their application, the threshold for customizing other, system-standard interface elements is also lowered significantly. The ghastly trend I am about to describe is in existence due to this lowered threshold. In fact, I think this particular deviation off the beaten interface path would have been far more frowned upon a few years ago, when Mac interface designers were more conservative in using custom UI elements in general, and Apple disapproved of it more fiercely. Today, however, it won’t even stand in the way of scoring a design award runner-up, as my examples will go to prove.