CereCere (aka SeleSele, CeleCele)
CereCere seems a little more stuck up (not in a really bad way) than the rest of the quartet to me. When she goes after targets for their dream mirrors, she always wears fancy, stylish clothes. She usually gets to know her targets first. One of her targets was an artist who painted people's portraits, and she made him paint her picture so she looked prettier than she was. Interestingly, the lemure she summoned was even more stuck-up than CereCere. The lemure actually refused to eat the dream mirror so CereCere stuffed it down the lemure's throat. She uses flowers a lot--to create a potion to make the rest of the quartet fall asleep, and to create an illusion so they could take Rini's friend's dream mirror. She also has pink flowers all over her outfit.
I like CereCere, I guess. She has pretty cool hair, and she was so funny when she stuffed a dream mirror down her lemure's throat. I just wish she wasn't so...pink.
Mythology
CereCere is named after the Roman goddess Ceres. She was the goddess of earth and harvest. Ceres was also associated with the principles of unconditional love and nurturing support. That fits with CereCere because she is the most feminine of the quartet (And that's probably why she wears pink...*shudders*) Ceres corresponds to the Greek goddess Demeter. Demeter's symbol was the poppy flower, so that explains why CereCere has flowers all over her outfit. Also, poppies are usually red (I think, don't quote me on that though) so that could be the reason for CereCere's mostly pink and red outfit.
Color
As I've mentioned, CereCere wears a lot of pink. Pink and red are associated with the mythology of Ceres and Demeter, as I've mentioned. But CereCere's main color is yellow, because that's the color of her cue ball. As far as I can tell, the color yellow is just to connect her to Sailor Venus.
Asteroid
The asteroid Ceres is the largest and first discovered asteroid in the solar system. Maybe that's why CereCere is the leader of the Amazoness Quartet ^_~