Hello, I have a 2014 Fiesta in Storm Grey Metallic. Im have a hard time finding this paint color to repair my bumper. One online supplier insisted that "Ford doesnt make that color", even though my original window sticker says exactly this color name and the driver side door sticker says: "EXT COL: WB", which nobody seems to reference.

Does anyone know if this color code has changed?? The only thing that appears close is "Sterling Grey Metallic".

Note that GM does make a storm grey metallic, but it's slighly more bronze then the original.

 

Yes, that is the different color code and name for the same color.
The color you need is M7205A; UJ Sterling Gray Metallic and it corresponds the Storm Gray color for the 2014 Fiesta from this color chart
Here is the link to check color codes for the 2014 Fiesta