Re: Orignal colors on 68' johnson 20hp..FD-22M??
Just looked through my OMC bible and found a pic of a 68 55 horse, the top of the hood above the logo is white and the rest is that nice light blue.
I repainted mine last year and found Duplicolor at Autozone that was really close to factory color, of coarse for about 4x as much you can get actual OMC paint.
If you are going to repaint and you want it to last and look nice strip it down, when I did mine I found alot of the paint looked good but wasn't really stuck to anyhting, I used a paint scraper to get all the lose stuff off then sanded what was still stuck really well.
I hung mine from the rafters in the garage and took the motor mount off to get it cleaned up really well.