IR_Black Theme for Chrome Developer Tools

Custom.css

/**********************************************/
/*
/* IR_Black Skin by Ben Truyman - 2011
/*
/* Based on Todd Werth's IR_Black:
/* http://blog.toddwerth.com/entries/2
/*
/* Inspired by Darcy Clarke's blog post:
/* http://darcyclarke.me/design/skin-your-chrome-inspector/
/*
/**********************************************/

/**********************************************/
/* Console
/**********************************************/

  /**********************************************/
  /* Messages
  /**********************************************/
  
  #console-messages {
    font-family: 'DroidSansMono', Menlo, monospace !important;
    background: #242424;
  }
  
  #console-messages a {
    color: #666 !important;
  }
  
  #console-messages a:hover {
    color: #999 !important;
  }
  
  #console-messages .console-message {
    color: #f1f1f1 !important;
  }
  
  #console-messages .console-message, .console-user-command {
    border-bottom: 1px solid #444 !important;
  }
  
  #console-messages .console-user-command > .console-message-text {
    color: #ffd2a7 !important;
  }
  
  #console-messages .console-formatted-number {
    color: #ff73fd !important;
  }
  
  #console-messages .console-formatted-string {
    color: #a8ff60 !important;
  }
  
  #console-messages .console-formatted-object {
    color: #7c7c7c !important;
  }
  
  #console-messages .console-formatted-function {
    color: #fff !important;
  }
  
  #console-messages .console-formatted-regexp {
    color: #e9c062 !important;
  }
  
  #console-messages .console-group-messages .section .header .title {
    color: #f1f1f1 !important;
  }
  
  #console-messages .section .properties .name, .event-properties .name {
    color: #96cbfe !important;
  }
  
  #console-messages .console-group-messages .section .header::before,
  #console-messages .properties-tree li.parent::before {
    content: url(chrome-devtools://devtools/Images/treeRightTriangleWhite.png) !important;
  }
  
  #console-messages .console-group-messages .section.expanded .header::before,
  #console-messages .properties-tree li.parent.expanded::before {
    content: url(chrome-devtools://devtools/Images/treeDownTriangleWhite.png) !important;
  }
  
  @-webkit-keyframes webkit-error-level { 
    0%   { color: #f77; !important }
    50%  { color: #f00; !important }
    100% { color: #f77; !important }
  }
  
  #console-messages .console-error-level .console-message-text {
    color: #f66 !important;
    -webkit-animation-name: webkit-error-level;
    -webkit-animation-duration: 2s;
    -webkit-animation-iteration-count: infinite;
    -webkit-timing-function: ease-in-out;
  }
  
  #console-messages .console-user-command::before {
    background-image: url(data:image/png;base64,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) !important;
  }
  
  /**********************************************/
  /* Prompt
  /**********************************************/
  
  #console-prompt {
    color: #f1f1f1 !important;
  }
  
  #console-prompt::before {
    background-image: url(data:image/png;base64,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) !important;
    color: #fff !important;
  }

/**********************************************/
/* Elements/Network
/**********************************************/

  /**********************************************/
  /* Layout
  /**********************************************/
  #storage-views .script-view,
  #network-views .script-view,
  #script-resource-views .script-view {
    color: #ccc !important;
  }
  
  #storage-views .script-view,
  #elements-content,
  #network-views .text-editor-contents,
  #script-resource-views .script-view {
    background: #242424 !important;
    font-size: 12px !important;
  }
  
  #elements-content .highlight { 
    color: #f1f1f1;
  }
  
  #elements-content li.hovered:not(.selected) .selection {
    background: rgba(255, 255, 255, .2) !important;
  }

  #elements-content .selection.selected {
    z-index: 0 !important;
  }

  #elements-content ol:focus li.selected .selection {
    background: #3F4360 !important;
  }

  #elements-content .selected .highlight {
    position: relative;
    z-index: 2;
  }
  
  #elements-content .selected {
    background-color: #4c4d5d !important;
  }
  
  #elements-content .editing {
    background-color: #242424 !important;
  }
  
  #elements-content .parent::before {
    content: url(chrome-devtools://devtools/Images/treeRightTriangleWhite.png) !important;
    position: relative;
    z-index: 999;
  }
  
  #elements-content .parent.expanded::before {
    content: url(chrome-devtools://devtools/Images/treeDownTriangleWhite.png) !important;
  }
  
  /**********************************************/
  /* HTML
  /**********************************************/
  #storage-views .webkit-html-comment,
  #elements-content .webkit-html-comment,
  #network-views .webkit-html-comment,
  #script-resource-views .webkit-html-comment {
    color: #7c7c7c !important;
  }
  
  #storage-views .webkit-html-tag,
  #elements-content .webkit-html-tag,
  #network-views .webkit-html-tag,
  #script-resource-views .webkit-html-tag {
    color: #96cbfe !important;
  }
  
  #storage-views .webkit-html-attribute-name,
  #elements-content .webkit-html-attribute-name,
  #network-views .webkit-html-attribute-name,
  #script-resource-views .webkit-html-attribute-name {
    color: #ffd2a7 !important;
  }
  
  #storage-views .webkit-html-attribute-value,
  #elements-content .webkit-html-attribute-value,
  #network-views .webkit-html-attribute-value,
  #script-resource-views .webkit-html-attribute-value {
    color: #a8ff60 !important;
  }
  
  #storage-views .webkit-html-text-node,
  #elements-content .webkit-html-text-node,
  #network-views .webkit-html-text-node,
  #script-resource-views .webkit-html-text-node
  #storage-views .webkit-html-css-node,
  #elements-content .webkit-html-css-node,
  #network-views .webkit-html-css-node,
  #script-resource-views .webkit-html-css-node {
    color: #c2c3c3 !important;
  }
  
  #storage-views .webkit-html-js-node,
  #elements-content .webkit-html-js-node,
  #network-views .webkit-html-js-node,
  #script-resource-views .webkit-html-js-node {
    color: #c2c3c3 !important;
  }
  
  #storage-views .webkit-html-resource-link,
  #elements-content .webkit-html-resource-link,
  #network-views .webkit-html-resource-link,
  #script-resource-views .webkit-html-resource-link,
  #storage-views .webkit-html-external-link,
  #elements-content .webkit-html-external-link,
  #network-views .webkit-html-external-link,
  #script-resource-views .webkit-html-external-link {
    color: #ff73fd !important;
  }
  
  /**********************************************/
  /* CSS
  /**********************************************/
  
  #storage-views .webkit-css-comment,
  #elements-content .webkit-css-comment,
  #network-views .webkit-css-comment,
  #script-resource-views .webkit-css-comment {
    color: #7c7c7c !important;
  }
  
  #storage-views .webkit-css-selector,
  #elements-content .webkit-css-selector,
  #network-views .webkit-css-selector,
  #script-resource-views .webkit-css-selector {
    color: #62b1fe !important;
  }
  
  #storage-views .webkit-css-property,
  #elements-content .webkit-css-property,
  #network-views .webkit-css-property,
  #script-resource-views .webkit-css-property {
    color: #fff !important;
  }
  
  #storage-views .webkit-css-keyword,
  #elements-content .webkit-css-keyword,
  #network-views .webkit-css-keyword,
  #script-resource-views .webkit-css-keyword {
    color: #f9ee98 !important;
  }
  
  #storage-views .webkit-css-number,
  #elements-content .webkit-css-number,
  #network-views .webkit-css-number,
  #script-resource-views .webkit-css-number {
    color: #ff73fd !important;
  }
  
  #storage-views .webkit-css-important,
  #elements-content .webkit-css-important,
  #network-views .webkit-css-important,
  #script-resource-views .webkit-css-important
  #storage-views .webkit-css-at-rule,
  #elements-content .webkit-css-at-rule,
  #network-views .webkit-css-at-rule,
  #script-resource-views .webkit-css-at-rule {
    color: #96cbfe !important;
  }
  
  #storage-views .webkit-css-string,
  #elements-content .webkit-css-string,
  #network-views .webkit-css-string,
  #script-resource-views .webkit-css-string {
    color: #a8ff60 !important;
  }
  
  #storage-views .webkit-css-url,
  #elements-content .webkit-css-url,
  #network-views .webkit-css-url,
  #script-resource-views .webkit-css-url {
    color: #c6c5fe !important;
  }
  
  /**********************************************/
  /* JavaScript
  /**********************************************/
  
  #storage-views .webkit-line-content,
  #elements-content .webkit-line-content,
  #network-views .webkit-line-content,
  #script-resource-views .webkit-line-content,
  #storage-views .webkit-javascript-ident,
  #elements-content .webkit-javascript-ident,
  #network-views .webkit-javascript-ident,
  #script-resource-views .webkit-javascript-ident {
    color: #fff !important;
  }
  
  #storage-views .webkit-javascript-keyword,
  #elements-content .webkit-javascript-keyword,
  #network-views .webkit-javascript-keyword,
  #script-resource-views .webkit-javascript-keyword {
    color: #cfcb90 !important;
  }
  
  #storage-views .webkit-javascript-comment,
  #elements-content .webkit-javascript-comment,
  #network-views .webkit-javascript-comment,
  #script-resource-views .webkit-javascript-comment {
    color: #7c7c7c !important;
  }
  
  #storage-views .webkit-javascript-string,
  #elements-content .webkit-javascript-string,
  #network-views .webkit-javascript-string,
  #script-resource-views .webkit-javascript-string {
    color: #a8ff60 !important;
  }
  
  #storage-views .webkit-javascript-number,
  #elements-content .webkit-javascript-number,
  #network-views .webkit-javascript-number,
  #script-resource-views .webkit-javascript-number {
    color: #ff73fd !important;
  }
  
  #storage-views .webkit-javascript-regexp,
  #elements-content .webkit-javascript-regexp,
  #network-views .webkit-javascript-regexp,
  #script-resource-views .webkit-javascript-regexp {
    color: #e9c062 !important;
  }

seems not working in Chrome 33.0.1750.146 m?

+1 on not working. Did google remove support for this I wonder?
Version 33.0.1750.152

It seems support was dropped for this: https://code.google.com/p/chromium/issues/detail?id=318566

However devtools theme support seems to be a work in progress in the form of an extension. I was able to get it to work by doing the following:

1. Enable Developer Tools Experiments. Navigate to chrome://flags, search for #enable-devtools-experiments and click the enable link. Now restart Chrome.
2. In devtools click the settings gear, then Experiments in the left pane, then "Allow custom UI themes" in the right pane.
3. Create an extension. I did that with https://github.com/zenorocha/generator-devtools-theme. It will generate the base files you need. Then add the gist above to style.css and save it.
4. Click on the Tools -> Extensions menu within chrome and check the developer mode checkbox. Then click the "Load unpacked extension" button and navigate to the extension you made in step 2.

Its a whole lot more work and very kludgy but at this point it should work. At least it did for me: http://take.ms/4ZJOf