My facial hair seems to turn ginger-ish if I allow it to grow past the 'rugged stubble' faze.

Same, its a bit of a mystery to me. A lot of my mates are the same, not sure if its something to do with having an Irish heritage or if this happens to everyone.

Hopefully it doesn't happen if you let other hair grow too long, don't want any girls being put off by 'rusty clock springs' down below.

See, this is the thing. I was naturally blonde from birth, but my hair (on my head) turned brown over time. I have no worries 'down there', though I do often like to keep them neatly trimmed.
I'm unsure if it's a case of the soap I use manipulating the facial hair (I used to use some face lotion that made my eyebrows temporarily ginger), or if it's because I'm from (distant) Irish Heritage and/or being naturally fair haired.

Back, Sack and Crack required.

Disturbingly patches of bodily hair are going grey on me and I don't mean on my head. From certain angles it now looks like Billy Connolly.

Thanks for a terrifying mental image.