You have 2 options:
1) Buy a set of clear pre-facelift lights. These are a direct fit, however you'll pay around £1400 from a dealer. Rarely they will come up for sale as a used buy, but still likely to set you back £600-700 for the pair due to being so rare.
2) Perform a cut and shut by replacing the inner orange hockey stick with clear hockey sticks. You could also tint your hockey sticks to hide the orange, as somebody has recently done on here.
Either way, you'll end up spending a few hundred £'s on sourcing the parts, as clear headlights aren't cheap, even when damaged.
Andrew.