First welcome to the site. Hope you find the information and support helpful in your restoration project
So I cleaned up my springs for a 69 Mach 1 351 h code, FMX, AC, PS, PB car metcheun build. I obviously see the yellow , but what?s the other color ?
Don't have an exact match (in my collection) to your car and its options but believe based on others I believe the other color would have been Tan
Is it original paint or crayon?
Originally paint applied likely with a 1/2" brush while the spring out of the car before installation. This can make the stripe appear to be marked upside down once installed on some original examples. There is some information that might help you in the Library section of the site under Basic Paint Marks
How do I replicate or should I just clear the spring? Just a clean driver thanks. Also if I paint the marking , what paint and color? [/img]
Are you restoring the car or are you trying to maintain your car in an unrestored state? Makes a difference
If restoring I suggest you search for and read some of the threads on how to replicate darkened heat treated steel and to protect it once finished.
If maintaining the look then kill any rust (products like EvapoRust) and then some protecting oil is applied as well as maintained over time
Once the area is clean any quality enamel tan colored paint should do the job