Synonyms for Vibrant (same or very similar meaning)
WordNet sense 1 (vigorous and animated):
vivaciousWordNet sense 2 (displaying animation, vigor, or liveliness):
spiritedWordNet sense 3 (having a tendency to reverberate or be repeatedly reflected):
reverberantWordNet sense 4 (having striking color):
colourfulFrom the ODE community, based on WordNetadd/edit