title: CSS ARGB RGBA hex formats
body: <p>For a jQuery colorpicker I've been working on (https://github.com/vanderlee/colorpicker), I've been asked to implement hex-ARGB (<code>#AARRGGBB</code>) parsing.</p>
  
  <p>However I'm weary to implement hex-ARGB as CSS currently supports the <code>RGBA(r,g,b,a)</code> syntax and, if hex is ever supported, will be more likely to support <code>#RRGGBBAA</code> syntax.</p>
  
  <p>On the other hand, IE's <code>filter</code> CSS tags already use <code>#AARRGGBB</code>. However, neither format is an actual standard of any kind.</p>
  
  <p>My colorpicker already supports all standard CSS/HTML syntax and has output formatting flexible enough to output most non-standard formats you might want. The problem is input; parsing. There's no reasonable way to distinguish between the two formats, so I can't have both of them parsed automatically.</p>
  
  <p>Does anybody know of any strong argument for or against either <code>#AARRGGBB</code> or <code>#RRGGBBAA</code> for use in a colorpicker on the web?</p>