What comes after green belt in karate?

it depends on the style of karate

in my karate it goes

white-yellow-orange-green-blue-purple-brown1-brown2-brown3- black

if u r to young after brown3 u do black/white-black/yellow-black/orange-black/green ............and so on til u get full black

Yes In my Tang Soo Do Fed. it goes White-Yellow-Orange(Stripes)- Green (Stripes)-Red (Stripes)- Blue(Stripes) - Black Belt(Degrees)