How many belts are there in jujitsu?

At a dojo that i know of, they have this belt order:

For kids:

White

White/yellow stripe

White/orange stripe

White/green stripe

Then they stay there until 16 and then get a blue belt.

If they have been there for a long time, they can skip to purple.

For 12 to 17:

White

Yellow

Orange

Green

Stay until they are 16, then:

Blue

Purple

Brown

Possibly black if they are good enough

then black/red squares

Then red

For adults:

White

Blue

Purple

Brown

Black

Black/Red squares

Red

But you have to get four stripes on each belt to move to the next one.

Hope I Helped!!