"I eat an orange."
Flannbhuí is also used for the colour orange. It comes from "flann" meaning blood-red, and "buí" meaning yellow. So it's sort of a red-yellow. The orange on the Irish flag is flannbhuí, not oráiste. I've always considered flannbhuí to be a deeper orange colour, but I'm not sure if this is universal. Similar to the difference between glas and uaine for different shades of green. Glas is for natural or darker shades, uaine for artificial, dyed, or brighter shades of green.