anodizing with multiple colors

[july_favre]

Will anodizing with multiple colors like a fade contaminate the second color its dipped into?
And how long do you have to do fancy stuff before it seals?

[mcaswell]

Will anodizing with multiple colors like a fade contaminate the second color its dipped into?

No.

And how long do you have to do fancy stuff before it seals?

You have until you physically seal it. It doesn't seal automatically.