I predict that Mythbusters will not take this up because (a) it deals with a taboo subject (racism) and (b) there is nothing that they can blow up.
If you look through YouTube, you will see a huge number of Black people discussing what is called the phenomena of being "color struck". Lil Wayne, the rapper, once said in a rap that he liked "red" ie lighter skinned women. There is at least one video in which a dark skinned woman tells us that she will no ;longer listen to Lil Wayne or buy his music.
You will see bunches of dark skinned women complaining about how pissed the are when they hear someone say "She's pretty for a dark-skinned woman". You will also see videos of light skinned women complaining about people telling them that they "aren't Black enough".
There are many fewer Black men that tell YouTube about their problems with this, but I think it is because men do not like to discuss problems they cannot solve, or even think about them.
I observe that darker men (Wesley Snipes, Denzel, Chris Rock) seem to be preferred for movie roles over lighter ones (like Sinbad). POn the other hand, lighter skinned women (Halley Berry, Rehanna, Beyonce) get more roles than darker ones (Angela Bassett), and there are several female Black stars that seem to have actually changed color (Janet Jackson, Mary Blige).
Skin bleaching products are very well advertised and featured anywhere there are Black people, including in Nigeria and Senegal. Tyra Banks has a whole series of videos this.
The White guys on Mythbusters would be seriously assaulted for anything they could possibly say or do on this subject. And that is another reason why they will never touch it.