What is a colorful plant for a freshwater aquarium?

I am just now starting to cycle a 5 gallon Eclipse tank for a betta (probably) and have one anubis and one golden sword plant and I am looking for a plant that has some color in it. The tank has an 11 Watt fluorescent bulb. Thanks! Also where can I buy it? online? There's nothing like that around here at the petstores!~