Any excuse to celebrate is good, the nature of the spirit is celebration.
Holi is associated with Mal Utsav (smearing of Colours). The Holika fire is burnt one day prior which signifies the burning away of what is old and worn out.
The festival of Holi has one eternal message, let bygones be bygones, bury old hatchets and start anew in the spirit of Spring.
Happy Holi! Have a great one, celebrate with your family & friends & stay Blessed forever.