We have had numerous problems with our supplier.The latest after 2 years they have agreed 2 or 3 panels where cut too short and have replaced same with a new company to an apparent exact match.The panels look different in colourbut we are assured they will wear in very quickly.I have my doubts and our guarantee runs out in 2 years time.What do you think Help PLEASE.The roof is an ultraframe roof.Sofar the supplier hasnt put this in writing as requested shall i confirm his comments to me?

I sounds to me as though they used a different brand of polycarbonate the second time - and frankly, they will be some minor differences, usually not that much different, but still to an "observant" eye noticeable

In my experience polycarbonate does not change in colour that much and I doubt what you have will ever match