Any way to get bright colours on Kaiser in 4th job?

[Daakun]

Using the random colour change and reset coupons just changes me to off shades of black. :/

[Dark Link]

Using the random colour change and reset coupons just changes me to off shades of black. :/

The "Main color" will always be a shade of black, but the Dragon Slash and "Flames" from using Giga Slasher will change.