brightly coloured and decorated; (of a person, behaviour, writing style etc) very energetic, lively etc

extravagant, theatrical

(of words, ways of speaking or writing) used in situations when one can be friendly and relaxed

casual, simple

feeling, showing, self-confidence and self-satisfaction

lively

unmindful of social conventions

unmindful of social conventions

wild and daring; on one side

charming and immoral

brightly coloured or decorated, but cheap or in bad state

cheap, tasteless