Outline Color

The outline-color property is used to set the color of the outline.

Class	Properties
`outline-grey`	`outline-color: color.$grey`
`outline-white`	`outline-color: white`
`outline-black`	`outline-color: black`
`outline-text`	`outline-color: theme('color', 'text')`
`outline-primary`	`outline-color: theme('color', 'primary')`
`outline-success`	`outline-color: theme('color', 'success')`
`outline-warning`	`outline-color: theme('color', 'warning')`
`outline-error`	`outline-color: theme('color', 'error')`
`outline-dark`	`outline-color: theme('color', 'dark')`