Aaron is an extension that transforms your Mac's user interface into the Apple Grayscale Appearance, which Apple is planning to implement in thier upcoming Mac OS 8 system software release. To use it, just drop it in your Extensions folder, or drop it on your System folder and let the Finder put it where it belongs. When you restart, you will see the changes listed below. To temporarily disable Aaron, hold down the mouse button while it loads at startup.

Aaron is a "Fat Binary" containing both 680x0 and PowerPC native code for optimum performance on both Macs and PowerMacs. In other words, Aaron is Accelerated for Power Macintosh. Aaron requires a 68020 or better, so in particular it will not work on a Mac Plus. Sorry.