Apple is bringing a lot of its best ideas from the past to the next generation of iPhones and iPads, but it’s not stopping there.

The Cupertino company is introducing OLED ink, a kind of holographic version of Apple’s classic metal-like iPhone, on both the iPhone 7 series and iPhone SE.

The ink comes in two types: a “metallic” version that’s just a solid layer of pigment, and a “glass” version made from a “magnetic material” that’s both transparent and reflective.

Both are available for $50 to $60 a pop.

The OLED ink will reportedly cost $200 or more.

Apple said it’s been testing the ink in-house for a while, but didn’t share any details about its testing process.

That could be due to the fact that the company is testing it with a variety of devices and testing in-store for the iPhone 6 and iPhone 6 Plus, as well as the iPhone 8 and iPhone 8 Plus.

While it’s a major upgrade from Apple’s past iPhone ink, it’s still not quite the same as the kind of pigment that we see on the iPhone SE and iPhone X. The iPhone 7 is the only Apple device that has a clear OLED-based color on the front of the device.

The next iPhone is expected to come with a clear glass front too, with the OLED ink being used as the base.

That’s a huge step up from the iPhone’s previous clear glass design.

The OLED ink is also the first iPhone to include a transparent back cover that’s transparent.

The next iPhone could have a glass back cover as well.