Today I got as a gift the FOC Skywarp [2014] and after almost half of the afternoon with it I just noticed one of the legs the grey part is not painted.
Has anyone had the same mistake or is it just mine?

 

It's probably a mistake. I've had a few other figures with the same issue. My FE prime Arcee only has on silver paint app on her stomach. If it bothers you enough, paint it or return it for another. This QC issue happens quite often.

 

I have a 2010 Generations Thrust with one leg only half painted.

 

Just an error. My RTS Turbo Tracks is missing paint on the red stripe by the knee.

 

I'd take high concentration alcohol (91%) and rub the paint off the other leg. Problem solved.

 

Random factory mistake. My Bomber megs only has one intake vent painted and while I can paint that metallic purple color is going to a bitch for me to match.

 

My Generations Legends Bumblbee lacks the silver paint on one knee. Sloppy QC.

 

Thanks for all your replies i will take them into advice ^^