casual

smart

intelligent

buoyant

lighthearted

smooth

mellow

mild

soft

catchy

haunting

shiny

breezy

balmy

salubrious

debonair

bright

light

luminous

enlightened

cheerful

cheery

fun

festive

joyful

joyous

jolly

brilliant

dreamy

uplifting

cool

sunny

vivid

distinct

clear

gleaming

sparkling

dazzling

futuristic

innovative

active

good

lovely

fantastic

great

beautiful

positive

foreboding

lively

animated

enlighten

gleam

sparkle