No idea why orange gets used, these clear ones still use orange lighting. OEM quality, because, well, it's OEM. Looks pretty good on black/gray/silver/white cars, kinda alright on other colors.
As in the last generation 86 and BRZ, Japan might have done it best with their very own clear sidemarkers. Not only are these plug and play genuine Subaru parts, but the design is slightly different. These feature a unique aero bulge feature which ties into the tail lights more than the USDM orange sidemarkers.
Warranty Disclaimer: Subaru of America will only warranty parts installed by a CERTIFIED Subaru Dealership. The part being installed must also match the vehicle VIN. IE If you install an STi block in a WRX at your friends shop, do not expect a warranty claim to come through if it explodes! Please use your best judgement.