Thanks Orange Gelato! (like your name by the way...conjures up a tasty image
)
Glad you enjoyed the riddle. Thing is, in this particular case, the riddle should be pretty easy to solve once you solve part of it...so the hints given later in the video are the best I can really give you to preserve the challenge.
One hint I can drop, and even this is probably too easy, is that if a colour which has a light wavelength of 620-740 nanometers has come up in any of your guesses for the first part of the riddle....you are probably on the right track.