Good guess, but no, sorry. It does not have any references to other games or the real world.
The riddle:
Both the blue, with the red garniture,
and the red, with the blue coiffure
I have known, but now I serve
a greater purpose, I bring the verve!
Wrong answers:
Lowell Bridges
Zidane
Meltigemini
Aspiring artist Michael
Beatrix
Ruby
Steiner
Cargo ship
Hilda Garde 2
Zorn & Thorn's plane
Steiner's armour
Phoenix down
Shimmering Island
Tantalus
The black mages
Lindblum
The Red Rose
Kuja
Ribbon
Madeen
Mini-Prima Vista
Fat Chocobo Card
King of Jump Rope
Dark Matter
Peridot
Opiuchus
Ancient Aroma
Gastro Fork
Iifa tree
Hammer
Kirman Coffee
Magical Fingertip
Une's Mirror
Hints / notes:
The answer is an item
The answer is not:
a character
an enemy
a living creature
a location
All mentioned colours, except for the "red" in the second line, are literal
"bring" in the last line is in the meaning "give to" rather than "transport to"
The two first lines refer to characters
The answer is related to a subquest
"I serve a greater purpose, I bring the verve" is quite literal. It didn't serve a great purpose before (but still a purpose).
The riddle does not have any references to other games or the real world
