My Twitter theme color picker doesn't show, here's a workaround

darn-it-twitter.js

/*

To use,

Edit line 38-40 below with your desired Twitter theme color.

1. Go to your profile page.
2. Enter the code below into the console.
3. Click "Edit profile".
4. Make a one-character change in your Twitter bio.
5. Click "Save changes".

Your Twitter theme color should now be updated. For me however,
the color only shows for other users and in incognito mode.

You may also need to fix your Twitter bio afterward. (Spaces get
replaced with pluses.)

*/

var oldSend = XMLHttpRequest.prototype.send;

XMLHttpRequest.prototype.send = function(str) {
  var pairs = str.split('&').reduce(function(obj, p) {
    var [k, v] = p.split('=')
    k = decodeURIComponent(k);
    v = decodeURIComponent(v);
    obj[k] = v;
    return obj;
  }, {});

  var condition =
    'authenticity_token' in pairs &&
    pairs.page_context === 'me' &&
    pairs.section_context === 'profile';

  if (condition) {
    pairs['user[profile_link_color]'] = '#34495E'; // nice dark blue color
    pairs['user[profile_link_color]'] = '#4e2a8e'; // purple-y color
    pairs['user[profile_link_color]'] = '#584b5e'; // another purple-y color

    str = $.param(pairs);
    alert(str);
    oldSend.call(this, str);
  } else {
    oldSend.apply(this, arguments)
  }
}