Lt.DanWell, the included ink cartridges have you covered. Try these out first. Then find any colour that you like and buy a bottle. Then see your money fly out of your wallet as you spend more and more on pens and ink.
Noodler's, Diamine, Waterman are pretty affordable and will perform well.
Noodler's, Diamine, Waterman are pretty affordable and will perform well.