What color balloons were added to Lucky Charms in 1989?

Lucky Charms is a brand of cereal produced by the General Mills food company since 1964. The cereal consists of toasted oat pieces and multi-colored marshmallow shapes ("marbits" or marshmallow bits). The label features a leprechaun mascot, Lucky, animated in commercials.

The first boxes of Lucky Charms cereal contained marshmallows in the shapes of pink hearts, yellow moons, orange stars, pink elephants, and green clovers. The lineup has changed occasionally, beginning with the introduction of blue diamonds in 1975, followed by purple horseshoes in 1983, red balloons in 1989, green trees 1991, rainbows in 1992, blue moons 1995, leprechaun hats in 1997 (temporarily replaced the green clovers), orange shooting stars and around the world charms in 1998 (added blue, green, yellow, purple, and red in 2011), a crystal ball in 2001, and an hourglass in 2008. In 2013, 6 new rainbow swirl moons and 2 new rainbow charms were introduced. From the original four marshmallows, the permanent roster as of 2013 includes eight marshmallows.

Each marshmallow is meant to represent one of Lucky's magical charms. Balloons represent the power to make things float. In 1990, a green pine tree-shaped marshmallow was temporarily added to the lineup. During that time, the cereal promoted Earth Day with a free Colorado Blue Spruce seedling with proofs-of-purchase. In June 2013, two new rainbow marshmallows were added for LGBT Pride Month.