"In October 13, 2018 Spectrum's Official Fan Club name 'Lantana' was born.

(...)

I liked the fact that the color of the flower changes to seven, but I have a contradictory flower saying 'I don't change'. We will continue to change our appearance, but we will continue to love music, the stage, and you.

(...)

Although it was a short time, I think that all the time we have walked together has contained all the happiness. I still have something I can't forget because I am grateful to you in that time. As you always say, do you remember? Let's just walk the Spectrum flower path.

(...)

For us, the flower path is the way you bloom. As long as it stays with you, Lantana, the flower path will be embroidered on Spectrum anytime and anywhere. If this isn't a flower path, what is a flower path, right? So we walk together. We will be a brilliant light group on a beautiful flower path."

(Excerpt from Donggyu's letter to us on fancafe about the fandom's name, the translation may contain some inconsistencies)