For Titanium Metallic (1D4), the match isn't too bad. It's not noticable to other people that repairs have been made, but I can tell where I've put touch up paint. I use
Lankga after I put touch up paint on. While my touch ups aren't perfect and unnoticable, it does look better than if the chips were left untouched.
Overall, I would say it's not perfect, but I'm not complaining either since silver is a hard color to match and paint to begin with. Hopefully, you're a) not as picky as me or b) Galactic is an easier color to match and deal with than silver.