Never found a better way to cover stonechips than touch up paint. Most are very good on newish cars, but dont match so well on older cars where the paint has faded.
I usually use about 3 coats, then rub down with TCut after a week, then polish and wax.
It helps if youcan feather it in a bit.
B Max Titanium X 1.0 125 bhp in Magnetic with built in SatNav and rear sensors.