Latvian Orb Picture

We're not sure what caused these colored orbs: "Hello! We had a party, a birthday party in my friends garden; so after taking these photos we found out that there's something like flying objects (orbs), that wasn't seen by a naked eye...we took them with a Sony Cybershot DSC-P43 - And my name is Anrijs Zvaigzne from Europe--Latvia, Madona."