We are dealing with this situation on a regular basis now. Many people who were early adopters of LED products did not have the range of color temperatures to choose from that are available now. Since these products are still going to last 16 to 17 years, they are kind of stuck. Lee Filters (www.leefiltersusa.com) is now making filters to correct the color temperature of LED lighting. Take a look at the #622 filter color. You can get a gel material in sheet form that will color correct your LED strip. The challenge is that it is so lightweight there is not a good way to keep it in place. For a similar situation, we went to a company that had sheets of colored glass, like a place that makes and repairs stained glass windows. We had them cut strips of amber glass that were 2 inches wide and 24 inches long, and then laid them on top of the LED strip. The reality is that it might be less expensive simply to change out the existing 4000K strips with 2700K strips. The 4000K strips work really well in a closet above the clothing to help differentiate between black, navy blue and charcoal gray. This holds true for above the washer and dryer when you are trying to match socks. So what I am recommending is a possible creative reuse of the existing lighting.