If you call them, they will likely tell you what capping or color code is a match for their tan. I would see if you can get a sample of their tan or the coil that they say is the direct match, for a comparison.

That said...gutter coil suppliers and garage manufacturers will usually have different shades of that tan. They will be close, but they are made by different people so there is usually no "standard" color formulation.

Thank you so much!

Hi there, Im having the same issue trying to paint the exterior of my home with tan vinyl Milgard windows that were installed about 15 years ago. The problem is they are no longer the original color- now a chalky tan with pink undertones :/ I hope your windows do not do the same thing mine did. Millgard came out about 5 years after they were installed and put a bandaid on in-with a wax that helped a little bit. Now they will not do anything since it has been too long. Good luck with the windows! Let me know if they gave you a color match. I could use it on my trim that is protected from the sun.