Re-Paint.

If it's the suppliers fault have them repaint them, if yours, your stuck with it.

PO to supplier as the both sides to be same color codes..however 10 years provided with two sides slight different color...(white's)...parts rolled reversed...thus exterior is thinner which should be thicker side....repair possible...polyester (enamal)...

any one knows what process i should be looking for now?...for remedy. thanks

Chances are you are looking at the color under a different light than the people who painted it did.

Try looking at it under a differnt type of lighting.

lighting angle is a possible case but not this one involved....one side 8 mil thick white and another 3 mil think white..when only 3 mil thick white color shows kind of greyish..and can not sustain 25 year warrenty under UV..

any economic process for remedy? re: repaint