美国采购需求：LED反射器、COB反射器、光学反射器、塑料透镜、LED透镜、塑料反射器

We currently have some exterior lights from your product line, but we've encountered an issue. A few of them are either not functioning at all or have one bulb that emits a different color from the rest, which is quite noticeable. Could you confirm if it's possible to just replace the faulty bulbs? We're looking for a quick solution to restore uniformity and functionality to our lighting. Your assistance in addressing this matter would be greatly appreciated.