rgba-png
Feed it rgba and it spews images!
rgba-png is a command line tool to create PNG images from RGBA color definitions in stylesheets.
Installation
gem install rgba_png
Usage (command line)
There's two parameters: path to the source file and path to images destination.
Example:
rgba-png path/to/file.css path/to/images/folder
It assumes that CSS rules are defined in their own line.
Images
Images are named after the color properties, for example, the color below:
rgba(0, 252, 255, 0.8)
Will generate the following file:
0-252-255-0.8.png