Tamamushi City - Rainbow Badge (aka Celadon City - Rainbow Badge)
玉虫色 (tamamushi-iro)
I really like this one because "tamamushi" refers to jewel beetles, which have deep green shells, but the light reflects off them in a rainbow, which is where "Rainbow Badge" comes from. As you can see in the screenshot, Celadon goes with a deep green.
>>28561287I just figure there were so many things pointing to Saffron and Sabrina last that it was fair speculation, especially since the original first Gym Leader would have most likely been for Viridian City, which pushes Giovanni out of that role.