Is there any info or story anywhere on how Oakley started making eyewear for Fox? I've been curious about this for a while.

Fox wanted to get into the eyewear business but rather than reinventing the wheel, the work was farmed out to Oakley. Oakley would produce the glasses with the Fox logo, and even assign them Oakley-style SKU's, provide the POP stands and towers. However they wouldn't promote them or provide the same tech, so while they still had O Matter and Plutonite (actually they were the first to have Gradient, which soon made its way to the normal Oakley lineup), they didn't have all the patents. I was told personally that they didn't have XYZ optics, but the initial Catalog shows otherwise.

Here's the first one from 2005
http://oakley.decemberized.com/Fox/2005/catalog.pdf

They have had ties for a while, I assume starting in the motocross industry where Fox also started. Both companies were founded around the same time, the owners are around the same age, and they made complimentary products in the motocross industry (lots of a riders who were sponsored by Oakley for eyewear were sponsored by Fox for apparal/helmets etc...) That is how I assumed it happened.