The Bic 4-Color pen is almost every kid's favorite for cramming four colors into one pen... with plenty of buttons for ADD...

The pen has a white top and a blue barrel for medium point and an orange barrel for fine point. The Bic web site claims the medium point is a .3 mm width and the fine is a .2 mm, but it seems to be more like Bic's normal 1.0 mm and .7 mm widths.