Which sentence uses a colon correctly?

The shoes come in: Magenta, teal, chartreuse, and evergreen.
The shoes come in four colors: magenta, teal, chartreuse, and evergreen.
The shoes come in: magenta, teal, chartreuse, and evergreen.
The shoes come in four colors: Magenta, teal, chartreuse, and evergreen.

The shoes come in four colors: magenta, teal, chartreuse, and evergreen.