Temple University Press has struck up a lovely relationship with our city that has led to the creation of several enchanting books for children. The prototype for what's now shaping up to be a series of sorts was P is for Philadelphia, which appeared in 2005. Next came A is for Art Museum, another alphabet primer executed with great splashes of color. Now, a little more than a year later, these two popular titles have been joined by another bright "painterly" effort aimed at the young called Art Museum Opposites.