HasHomebrew check whether the user has installed brew.

IsUnderHomebrew checks whether the given binary is under the homebrew path.

NewColorScheme returns a new ColorScheme with the given theme.

OpenBrowser opens a web browser at the specified url.

ColorScheme is a color scheme.

ErrClosedPagerPipe is the error returned when writing to a pager that has been closed.

Theme represents a color theme.