FireWorks
Red Orange Yellow Green
#FF0000 #FFa500 #FFFF00 #00FF00
rgb(255,0,0) rgb(255,165,0) rgb(255,255,0) rgb(0,255,0)
hsl(0, 100%, 50%) hsl(38.8, 100%, 50%) hsl(60, 100%, 50%) hsl(120, 100%, 50%)