For posterity, the easiest solution might be to either go to your filesystem or our downloads page and download the Perspective module:
.modl files are just zip files, so you can open them in any archive extraction tool. It'll contain, among other things, a perspective-themes .jar file.
.jar files are also just zip files, so you can open them in any archive extraction tool.
Inside the themes files there'll be a set of Perspective theme .zip files:
