I have just installed a areo kit in my JDM white EVO X MR, the color looks a bit different. Is it normal? Anyone has the same experience? Or I got the wrong color?

 

You must got the one for Regular Lancer...?

 

matching paint never goes right...most places will blend the front air dam into the fenders, fenders into the doors...ect.
If the pieces are diff materials (metal next to plastic) they wont match perfectly, and if they are painted at diff times, exposed to sun/elements for diff amounts of time (fade) they'll not match either. The paint code can be the same...but to the human eye, they'll be a little off-

 

that's why it's better when you have a dark colored car, they tend to match up better. Good luck with a white car, pretty much anything you do will look different. Especially if you have an accident or something and have to have something repainted.

 

If you purchased the aero kit from Mitsubishi it comes pre-sprayed so it would be a perfect match! However, if this is an after market aero kit good luck! In most cases the kit could have been sprayed at a different location, even with the same paint there could be huge difference's, for instance the gun they use or the direction they've sprayed the paint... Hopefully you can find a fix, good luck.

P.S. Pictures would be nice.

 

I had an 08 white WRX with a factory aero kit that never matched the color of the paint on the car. White is a tough color to match