Jeff brought the yellow paint dab by the grease fitting to my attention. Thanks for that.
I wanted to go thru all the original 65/66 control arms I have before I responded, but could not find any yellow paint dabs. Doesnt mean they were never there....I would need to completely take the control arms apart and degrease to see if there is any yellow there. Hard to do when they are assembled.
I will keep my eye open for this detail as I am restoring control arms and confirm if I find any with this in the future.