Downloading ColorTagGen 1.0 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free software for Mac is R.A.D. Productions & Ron Davis.
The most popular version of the program is 1.0. The software is included in Developer Tools. ColorTagGen is compatible with Mac OS X 10.6 or later. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
ColorTagGen is a simple application that generates HTML/CSS tags from a color. ColorTagGen lets you use the MacOS color picker to pick a color. It displays the Red/Green/Blue (RGB) values and the HTML/CSS to be inserted into your web page. It allows you to pick from the 4 possible ways of specifying the color in the CSS Spec.
You may want to check out more software for Mac, such as SEO SpyGlass, WebSite Auditor or Rank Tracker, which might be related to ColorTagGen.