The Japanese red maple trees are characterized by it's red leaves that become lighter and lighter as summer progresses into fall, often giving them a pinkish color. The tricolor beech tree also has large leaves that can be purplish-pink in color.
You probably (based on region) have either magnolias (southern warmer climate) or the black maple (norther cooler climate). Magnolias are definately pink, the black maple has reddish, sometimes pinkish colored leaves.