Howdy,
I'm not sure what "Metallic Blue" is -- is that a Roadster color?
The car in the video was definitely in the color formerly known as "Pacific Blue" and now just called "Blue". It is a metallic paint. Ultra dark -- almost black. You can tell that it's blue when the light hits it right. I feel as if it might actually look a little darker in person than it does in the close-up walk-around videos, since the camera was probably trying to get a decent exposure. In the video where the car starts in the shade and then drives out into the sun, you can see that it really looks black while in shadow. Also, the still picture with half the car in sun and the other half in shade is a pretty good match to my memory of reality. It was really funny listening to people at the event when the cars were in the shade: "Oh, is that the blue?" "No, that's the green" "That one is black, right?" "No, that's the blue, the black is out driving."
Regarding periodic professional cleaning: I mentioned in the other thread about calling this detailer I heard about. They have over 100 reviews on Yelp, and I think two of them are less than 5 stars. Judging from user comments, a thorough exterior cleaning that people rave about as "better than new" at that shop is about $350, but my impression is that that is something you might do once a year if that. They have a follow-on cleaning for $100 that they recommend every three months. That's not much more than I spend on conventional car washes in that time with my regular car.
Two problems with that for me. First, they are in San Francisco, which is not at all convenient to my work or home. Second, what do I do in between those cleanings? I understand that the touchless washes use strong detergents to make up for the lack of physical contact, and those may be hard on a nice finish.
Surely there are small businesses who do a quality mobile hand washing that doesn't swirl up the paint for a reasonable fee? For sure there are mobile detailers. Back when I had a BMW, I used to use a guy who came to my office, took the car for several hours, and returned it looking spectacular inside and out. I can live without the interior detailing and so forth if I can just get the exterior done well.
I could do it myself, but I have oak trees overhanging my driveway, so I suspect I would end up with pollen on the car before it even dried!