"The Blues" is a commercial from 1996, promoting the then-new blue M&M's.
(Blue and another blue M&M are dancing and singing)
Blue M&M's: (singing) Yes it's true, we're totally blue, yeah.
Yellow: I wanna be in this commercial.
Red: "You ain't gettin' this job cuz you're not blue".
Yellow: (sarcastically) Great. Well look at that.
Red: They've even got B. B. King singing the blue.
(Yellow dips his finger into a can of blue paint)
Yellow: I wanna be blue.
Red: Wait! (whispers in Yellow's ear)
(Jump cuts to Red and Yellow, now painted blue, dancing to B. B. King's blues music)
B. B. King: (singing) I got the blues, man.
Red: Take me home, B. B.
Yellow: Hurt me, get funky.
(Red and Yellow turn around, causing the director to see their unpainted backs)
Director: Cut, cut!
(Red and Yellow stop dancing)
Director: They're not blue.
(We see the two blue M&M' who were apparently tied up by Red and Yellow)
Director: The blue M&M's?
Red: Mr. King ate them. One bite, saw it with my own eyes.