>>51292596Jasmine is a shitty pun on the word "mine" or "mineral." Jasmine flowers are white, hence her white dress. Her japanese name is Mikan, which is a name for a citrus frit, hence her hair ornaments being orange balls. The seafoam green dress is presumably referencing the ocean near Olivine City or may be a reference to the mineral named olivine, which is green.
I agree that she doesn't look like her type unless you interpret the white dress as the shiny reflection off of a smooth metal surface, but that would be dumb. She could have silver hair or something but then it'd lose any contrast with her outfit.