Why does Bart Simpson wear a blue shirt in the comics & in other illustrations?
Why is Bart’s shirt sometimes orange and sometimes blue? On the show, Bart’s shirt is almost always orange. Yet, on most Simpsons merchandise and memorabilia, Bart’s shirt is light blue in color. There are also products featuring Bart in a red shirt, though these seem to be less common. The exact reason for this is not known. The most popular explanation is that it may be a trick used for picking out counterfeit or bootlegged merchandise. Another possible explanation is that Bart’s shirt color changed during the Tracey Ullman era. The very first batches of Simpsons merchandise were produced before the half-hour series even started, so the shirt color may have simply reflected this, with further merchandise being made to follow that original standard.