Anyone ever paint a roof?

[Patrick Snyder]

I have a house I plan on rehabbing and the roof color doesn't go well with the rest of the house.  The asphalt shingles are in good shape, so rather than replacing, I have been researching painting them.  There's a variety of opinions and I was hoping to get any info from anyone who has tried it.  The shingles are white, and dirty, and I'd love for them to be black.

Thanks in advance