Penny Blue XO
Penny Blue XO is a single estate rum from the island nation of Mauritius. It's distilled in small batches from molasses made from sugar cane grown on the Medine Estate. The rum is released in unique batches of around 10,000 bottles and is currently on batch #004. Each release has been aged in some combination of ex-congac, ex-bourbon or whisky casks. No colors or sugar have been added to this non-chill-filtered rum.
Gold RumRum that is often aged, but can also just have caramel-coloring added to provide color. No specific type or size barrel required. No set time required for aging for most countries with a few exceptions.