You were thinking of Good Friday.
Still, apparently the origin of the name seems to have more to do with the idea of a "black day" (a day when a disaster occurs), according to Wikipedia:
> The earliest evidence of the phrase Black Friday originated in Philadelphia, where it was used by police to describe the heavy pedestrian and vehicular traffic that would occur on the day after Thanksgiving. This usage dates to at least 1961.
Why would you do that? Wearing black does not imply that a person is bad. "Blacklist/whitelist" implies that whatever is in the list is bad/good.
While this association is not in any way "natural" or necessary, and it's not even universal, it is still extraordinarily old - dating all the way to Ancient Egypt and influencing European culture from there to now. And thus, it is extraordinarily hard to remove by playing language games with one word.
I should also mention that I am aware that in Japanese culture (and I believe others in that area, but don't know for sure), the traditional color for mourning is white, not black.
Also, what do blind auditions/interviews (a real change that would make sense in the Software industry as well) have to do with language policing?