WordNet sense 1 (having the capacity for thought and reason especially to a high degree):

intelligent

WordNet sense 2 (marked by high spirits or excitement):

effervescent, bubbling, sparkly

WordNet sense 3 (full of life and energy):

lively

WordNet sense 4 (having brief brilliant points or flashes of light):

glittering, glittery, aglitter, coruscant, fulgid, glinting, glistering, scintillant