frame paint for a 70

First post, I just joined up. Just picked up a 70 250 Cross. Every thing seems to be there but it looks like its been sitting outside for years. Already ordered numbers plates ,rear fender, seat foam & cover, cables & throttle from Vintage Husky. I'm sure I'll have a few questions as I go along, but my first one is paint for the frame and tank. I've come real close to both colors by just comparing spray paint in the hardware stores, but its hard to tell because the paint on the bike is so faded. So does anyone know of some matching paint you can buy or should I do like my last restoration and have a auto paint shop try to match it ?

Just did mine with a color I found in a Husky news letter:
Dupont Chroma Base B/C
Chrysler Import Code: H84
color: Grace Silver
Very nice color. I used PPG 2 stage base coat/clear coat epoxy.
Still working on the motor, hopefully I have it all together in the next
month or so.
Ron

Sorry, forgot the red for the tank,
Dupont Chroma base B/C
1993 BMW code: 248
color: Mugello red
Also PPG base coat/clear coat epxoy
Here's a before pic.
Ron