Model Master Cross Reference

I know this has been asked a lot but is there any where I can find a Model Master cross reference for Lowes or Home Depot. I been looking for light and dark ghost grey in a spray can and no hobby shop sell it.

I think that would be difficult if not impossible-paints from those places will be limited to very basic colors such as black, white, a few greys, light blue, med. blue, etc. Even cap colors are only an approximation and don’t match the colors inside.