Stylish Slack

color-nickname.js

var slackId = 'U02D0FE5H'

var processStyles = str =>
  str.replace(/;/g, '!important;').replace(/\.color/g, '#client-ui .color')

window.addEventListener('load', () => {

  var interval = setInterval(() => {
    var $myStyle = document.getElementById('color_rule_color_' + slackId)

    if (!$myStyle) {
      return
    }

    clearInterval(interval)

    var $styles = Array.from(document.querySelectorAll('style')).filter(node =>
      node.innerHTML.match(/\:not\(\.nuc\)/)
    )

    $styles.forEach(node => {
      node.innerHTML = processStyles(node.innerHTML)
    })

  }, 500);

}, false)

stylish-slack.css

.member::after {
    content: ' ' attr(href);
    color: #999;
}