index.js

const backgroundColor = '#282a36'
const foregroundColor = '#f8f8f2'
const borderColor = '#44475a'
const cursorColor = '#f8f8f2'
const colors = {
	black: '#000000',
	red: '#ff5555',
	green: '#50fa7b',
	yellow: '#f1fa8c',
	blue: '#bd93f9',
	magenta: '#ff79c6',
	cyan: '#8be9fd',
	white: '#bfbfbf',
	lightBlack: '#4d4d4d',
	lightRed: '#ff6e67',
	lightGreen: '#5af78e',
	lightYellow: '#f4f99d',
	lightBlue: '#caa9fa',
	lightMagenta: '#ff92d0',
	lightCyan: '#9aedfe',
	lightWhite: '#e6e6e6',
}

exports.decorateConfig = (config) => {
	return Object.assign({}, config, {
		backgroundColor: config.backgroundColor || backgroundColor,
		foregroundColor,
		borderColor,
		cursorColor,
		colors,
		termCSS: `
      ${config.termCSS || ''}
    `,
		css: `
      ${config.css || ''}
      .tabs_list .tab_tab.tab_active .tab_text  {
        background: ${backgroundColor};
      }

      .tab_active:before {
        border-color: ${borderColor};
      }
    `,
	})
}