Break up rice with a fork. If you have a fresh batch, spread them to cool for a few minutes.
Over medium heat, add oil and butter to the wok.
Sauté garlic, shallot, and red bell pepper until softened and slightly caramelized, about a minute.
Add annatto powder, turmeric powder, and rice. Toss them until they are evenly colored and heated through.
Season with salt and pepper to taste.
Notes
White rice: Leftover or day-old rice is ideal, but fresh-cooked rice that is not overcooked or too wet will also work.
Annatto: Also called achiote or "poor man's saffron," it has a subtle earthy flavor and is used as a natural food coloring. Annatto powder can be sprinkled directly on the dish or dissolved in hot water while the seeds are steeped to extract their orange-red pigment.
Turmeric powder: A rhizome belonging to the ginger family, it has bright orange flesh that imparts a vibrant yellow color. Its flavor is earthy, slightly citrusy, and a little peppery. It can be overwhelming and bitter when used in excess.