How to use the ansi-styles.yellow function in ansi-styles

module.exports = function terminal_plugin(md,options) {
  var defaultOptions = {
    styleOptions: {
      code: styles.yellow,
      blockquote: terminal.compoundStyle(['gray','italic']),
      html: styles.gray,
      heading: terminal.compoundStyle(['green','bold']),
      firstHeading: terminal.compoundStyle(['magenta','underline','bold']),
      hr: styles.reset,
      listitem: styles.reset,
      table: styles.reset,
      paragraph: styles.reset,
      strong: styles.bold,
      em: styles.italic,
      codespan: styles.yellow,
      del: terminal.compoundStyle(['dim','gray','strikethrough']),
      link: styles.blue,
      href: terminal.compoundStyle(['blue','underline'])
    },
    unescape: true
  };

  var opts = merge(defaultOptions, options);
  terminal(md,opts);
  // console.log(styles)
};

const util = require('util');
const ansiStyles = require('ansi-styles');
const stripAnsi = require('strip-ansi');
const cloneDeepWith = require('lodash/cloneDeepWith');
const reactPlugin = require('@concordance/react');
const chalk = require('./chalk').get();

// Wrap Concordance's React plugin. Change the name to avoid collisions if in
// the future users can register plugins themselves.
const avaReactPlugin = {...reactPlugin, name: 'ava-plugin-react'};
const plugins = [avaReactPlugin];

const forceColor = new chalk.Instance({level: Math.max(chalk.level, 1)});

const colorTheme = {
	boolean: ansiStyles.yellow,
	circular: forceColor.grey('[Circular]'),
	date: {
		invalid: forceColor.red('invalid'),
		value: ansiStyles.blue
	},
	diffGutters: {
		actual: forceColor.red('-') + ' ',
		expected: forceColor.green('+') + ' ',
		padding: '  '
	},
	error: {
		ctor: {open: ansiStyles.grey.open + '(', close: ')' + ansiStyles.grey.close},
		name: ansiStyles.magenta
	},
	function: {
		name: ansiStyles.blue,

/* eslint prefer-template: 0 */
const chalk = require('chalk')
const ansiStyles = require('ansi-styles') // eslint-disable-line

const forceColor = new chalk.constructor({
  enabled: true
})

const colorTheme = {
  boolean: ansiStyles.yellow,
  circular: forceColor.grey('[Circular]'),
  date: {
    invalid: forceColor.red('invalid'),
    value: ansiStyles.blue
  },
  diffGutters: {
    actual: forceColor.red('-') + ' ',
    expected: forceColor.green('+') + ' ',
    padding: '  '
  },
  error: {
    ctor: {
      open: ansiStyles.grey.open + '(',
      close: ')' + ansiStyles.grey.close
    },
    name: ansiStyles.magenta

padding: '  '
  },
  error: {
    ctor: { open: ansiStyles.grey.open + '(', close: ')' + ansiStyles.grey.close },
    name: ansiStyles.magenta
  },
  function: {
    name: ansiStyles.blue,
    stringTag: ansiStyles.magenta
  },
  global: ansiStyles.magenta,
  item: { after: forceColor.grey(',') },
  list: { openBracket: forceColor.grey('['), closeBracket: forceColor.grey(']') },
  mapEntry: { after: forceColor.grey(',') },
  maxDepth: forceColor.grey('…'),
  null: ansiStyles.yellow,
  number: ansiStyles.yellow,
  object: {
    openBracket: forceColor.grey('{'),
    closeBracket: forceColor.grey('}'),
    ctor: ansiStyles.magenta,
    stringTag: { open: ansiStyles.magenta.open + '@', close: ansiStyles.magenta.close },
    secondaryStringTag: { open: ansiStyles.grey.open + '@', close: ansiStyles.grey.close }
  },
  property: {
    after: forceColor.grey(','),
    keyBracket: { open: forceColor.grey('['), close: forceColor.grey(']') },
    valueFallback: forceColor.grey('…')
  },
  react: {
    functionType: forceColor.grey('\u235F'),
    openTag: {

secondaryStringTag: {
      open: ansiStyles.grey.open + '@',
      close: ansiStyles.grey.close
    }
  },
  property: {
    after: forceColor.grey(','),
    keyBracket: { open: forceColor.grey('['), close: forceColor.grey(']') },
    valueFallback: forceColor.grey('…')
  },
  regexp: {
    source: {
      open: ansiStyles.blue.open + '/',
      close: '/' + ansiStyles.blue.close
    },
    flags: ansiStyles.yellow
  },
  stats: { separator: forceColor.grey('---') },
  string: {
    open: ansiStyles.white.open,
    close: ansiStyles.white.close,
    line: { open: forceColor.white("'"), close: forceColor.white("'") },
    multiline: { start: forceColor.white('`'), end: forceColor.white('`') },
    controlPicture: ansiStyles.grey,
    diff: {
      insert: {
        open: ansiStyles.bgGreen.open + ansiStyles.black.open,
        close: ansiStyles.black.close + ansiStyles.bgGreen.close
      },
      delete: {
        open: ansiStyles.bgRed.open + ansiStyles.black.open,
        close: ansiStyles.black.close + ansiStyles.bgRed.close

.then(() => {
          let m = style.yellow.open + style.bold.open + '==> deployment completed successfully!'
            + style.bold.close + style.yellow.close + '\r\n';
          observer.next({ type: 'data', data: m });
          observer.complete();
        })
        .catch(err => {

padding: '  '
	},
	error: {
		ctor: {open: ansiStyles.grey.open + '(', close: ')' + ansiStyles.grey.close},
		name: ansiStyles.magenta
	},
	function: {
		name: ansiStyles.blue,
		stringTag: ansiStyles.magenta
	},
	global: ansiStyles.magenta,
	item: {after: forceColor.grey(',')},
	list: {openBracket: forceColor.grey('['), closeBracket: forceColor.grey(']')},
	mapEntry: {after: forceColor.grey(',')},
	maxDepth: forceColor.grey('…'),
	null: ansiStyles.yellow,
	number: ansiStyles.yellow,
	object: {
		openBracket: forceColor.grey('{'),
		closeBracket: forceColor.grey('}'),
		ctor: ansiStyles.magenta,
		stringTag: {open: ansiStyles.magenta.open + '@', close: ansiStyles.magenta.close},
		secondaryStringTag: {open: ansiStyles.grey.open + '@', close: ansiStyles.grey.close}
	},
	property: {
		after: forceColor.grey(','),
		keyBracket: {open: forceColor.grey('['), close: forceColor.grey(']')},
		valueFallback: forceColor.grey('…')
	},
	react: {
		functionType: forceColor.grey('\u235F'),
		openTag: {

delete: {
        open: ansiStyles.bgRed.open + ansiStyles.black.open,
        close: ansiStyles.black.close + ansiStyles.bgRed.close
      },
      equal: ansiStyles.white,
      insertLine: {
        open: ansiStyles.green.open,
        close: ansiStyles.green.close
      },
      deleteLine: {
        open: ansiStyles.red.open,
        close: ansiStyles.red.close
      }
    }
  },
  symbol: ansiStyles.yellow,
  typedArray: {
    bytes: ansiStyles.yellow
  },
  undefined: ansiStyles.yellow
}

const plugins = []
const theme = colorTheme

module.exports.concordanceOptions = { maxDepth: 3, plugins, theme }
module.exports.concordanceDiffOptions = { maxDepth: 1, plugins, theme }

module.exports = function terminal_plugin(md,options) {
  var defaultOptions = {
    styleOptions: {
      code: styles.yellow,
      blockquote: terminal.compoundStyle(['gray','italic']),
      html: styles.gray,
      heading: terminal.compoundStyle(['green','bold']),
      firstHeading: terminal.compoundStyle(['magenta','underline','bold']),
      hr: styles.reset,
      listitem: styles.reset,
      table: styles.reset,
      paragraph: styles.reset,
      strong: styles.bold,
      em: styles.italic,
      codespan: styles.yellow,
      del: terminal.compoundStyle(['dim','gray','strikethrough']),
      link: styles.blue,
      href: terminal.compoundStyle(['blue','underline'])
    },
    unescape: true