I'm Yoshi the Space Station Manager from the wiki.
I hit a power switch that makes the same effect as unplugging it. Didn't work.Unplug it and plug it back in then. That really does it.
I did not try putting the Wii onto another TV. But I tested the downstairs VCR just now and it was in color, meaning that I could theoretically move my Wii downstairs and get the color. But putting it downstairs, that would require some work. Not only that, but I would have the issue of bad (meaning that sometimes it works, sometimes it doesn't) internet connections downstairs on other devices (Wii doesn't have internet). And it's not like the Wii is totally unplayable. Sure, you can't tell the difference between a Green Shell and a Red Shell by the looks. But not totally unplayable. Just black and white.Did you try your cables in any other TVs? Did you arrange cables in the same port if you get the same problem? Trying to rule out a hardware issue.