As far as the Midnight color is concerned, it is merely a rumor but one I would highly believe.
Apple always gives a compelling reason to upgrade to a second-gen product by offering a unique color. It is expected, for example, to be the case with the next ULTRA watch which many are expecting will be offered in a dark color.
Same thing with the STUDIO. Initially, the Pro Minis were offered in Space Grey. It makes sense, in an effort to differentiate itself from the current M1 model, a Midnight color could be designated to the M2.
No. This is very unlikely. Apple does not “always offer a unique color” for their products.
For things like the iPhone, Apple Watch, and MacBook Air - these are some of apples best selling products. They sell tens of millions of units. For these products it makes sense to offer color options.
For niche products like the studio, apple is going to make one color. This historically would be either silver or space grey. They always offer a neutral color at minimum, and I highly doubt apple sells enough Mac studios to justify a second color option.
Like others have said, that video is not a good source. He doesn’t know anything - it’s all speculation just like Max Tech. It’s no different than anyone here making speculations.