Steering Linkage - Tie Rod Sleeve - correct finish?

[Hans L]

Regarding the steering linkage tie rod sleeves - what is the correct finish?  Natural or black painted?  I've seen both on restored cars and not sure.   Also - how about the two sleeve bolts - black phospate or cadmium/sliver zinc?

[Gramps69Z]

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[Hans L]

Thanks.  I forgot to do a search, but did go back many posts and didn't come across a discussion.  So net-net:  Tie Rod Sleeves are natural as are the clips;  the bolts are phosphate and oil; the lock nuts zinc/silver or natural.