How to use the @oclif/color.green function in @oclif/color

await writeToken(this, { token: data.result });    // write the access token in the file
        let value = await authService.overview(this);      // sends request the get the user's config
        let overview = JSON.stringify(value.data.result);
        await writeOverview(this, overview)                // write the user's config to the file
        console.log(color.green(messages.loggedin));
      }
      catch (e) {
        common.logError(e);
      }
    }
    else { // login with browser
      try {
        await opn(`${auth_url}${code}`, { wait: false });
      }
      catch (e) {
        cli.url(`${color.green(messages.click_here_to_login_msg)}`, `${auth_url}${code}`);
      }
      cli.action.start(messages.tryToLog);
      await cli.wait(waitTime);
      let isLoggedin = false;
      let repeatedCount = 0;

      while (!isLoggedin) {
        await cli.wait(waitTime);
        try {
          let resp = await authService.authenticate(code);
          console.log(resp);
          await writeToken(this, { token: resp.data.result });
          isLoggedin = true;
        }
        catch (e) {
          if (repeatedCount > maxRepeat) {

}
          repeatedCount++;
        }
      }

      if (isLoggedin) {
        try {
          let value = await authService.overview(this);
          let overview = JSON.stringify(value.data.result);
          writeOverview(this, overview);
        }
        catch (e) {
          common.logError(e);
        }
        cli.action.stop(messages.done_msg);
        console.log(color.green(messages.loggedin));
      }
      else {
        cli.action.stop(messages.abort_msg);
      }
    }
  }
}