Should I put a capital letter after a colon?
No, in most cases. Yes, when the passage that follows is a full sentence and is longer than just a few words.
For example: We cannot recruit any additional staff at the moment for one reason: our budget has been used up. And: The committee must find solutions to three problems: poor visibility, damage to equipment, and irregular transportation schedules.
But: One fact about American cars should not go unnoticed: They are designed for transportation needs in a country larger than all of Europe.
FOR THE FULL ARTICLE: click here