Lens: Gold Iridium
Very classy! I got these with the BT module on a whim, and haven't regretted it. I use these far more often without the module, as they are a solid, good looking pair of glasses. I'm not quite sure how I feel about "Oakley" being etched into the lens. It is kind of cool to have a pair of Oakleys that don't really advertise themselves, though.
Lens: Light Grey
I like that this frame was offered without Bluetooth at a lower price point (at least for a short time) for those people that didn't want or need the Bluetooth module. I really wish O-Luminum would get more respect from Oakley. The frames are very solid-feeling yet surprisingly light. Spring hinges are a necessity since O-Luminum is so stiff. I expected these to fit like Half Wires, but the lenses are much more square and there is much less wrap. As a result, the look isn't quite as nice as I hoped, but I'll still wear them.
As an Oakley fan, I had hoped for more aggressive styling (like an embedded icon or more sculpting), but I can understand that a plainer frame would have a better chance of appealing to new a customer base (for the Bluetooth-equipped version). One element that does stand out is the block-lettered OAKLEY etching on the lens. The letters have almost a frosted appearance, unlike most other Oakley lens etchings that use an outline font.
Mercury is a rather plain metallic silver... nothing special, but it gets the job done. Light Grey is a perfect tint for medium or variable light conditions, or when you don't want a very dark tint.
The style is pretty good. Nothing that catches a lot of attention, but the custom lense certainly do. Oluminums are great...super light, but only feels a slight bit cheap to handle. not sure if it can handle stress... I'm sure it can. It's just sth this lightweight don't usually seem sturdy compare to titanium, or x metal~...even the C5. All in all...I love this combo~