Mix & match colorful tops with neutral bottoms, or vice versa. (ordinarytraveler.com)
Maybe easier since I have boys, but I try to buy neutral bottoms at all times so I don't have to worry about if this shirt «goes» with those pants. (corporettemoms.com)
Swap ho - hum neutral bottoms for the happiest color of all: red. (redbookmag.com)