Corrected entry: Mark overuses a drug designed to chemically tan, thus achieving the required darkness to pass as a black. Problem is, it would darken his palms, and would immediately trigger suspicions by any actual black..including Sarah Walker.
Soul Man (1986)
1 corrected entry
Directed by: Steve Miner
Starring: James Earl Jones, C. Thomas Howell, Rae Dawn Chong, Arye Gross
Mark Watson: Mom! Dad! There's something I have to tell you... I'm black.
Trivia: In real life, Rae Dawn Chong (Sarah) and C. Thomas Howell (Mark) really did have a relationship and were even married. They were divorced in 1990, though.
Correction: No, it would not. The palms of the hands and the soles of the feet do not tan - they do not have melanin secreting skin cells to produce a tanning effect.