We all assume you mean violet.  These bolts are anodized (no doubt a
spelling mistake there!) this gives them the purple to violet colour.
Nothing wrong with them!

At 17:14 16/01/1999 -0800, Tom Young wrote:
>Hey everyone:
>
>I cleaned up the 6 large case "through bolts" on one of the Vanagon
>engines I'm rebuilding and I noticed that a couple of them are really
>beautiful - a gorgeous shade of violent, like they'd been anodized.  Is
>this color really the result of tempering of the steel (too hot) and do I
>need to replace these bolts?
>
>TIA.
>
>---------------------------------------------------------------------
>Tom Young               young@sherlock.SIMS.Berkeley.EDU
>Lafayette, CA  94549    '81 Vanagon
>---------------------------------------------------------------------
>
>

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