I can honestly say that I've never been able to hear purple before. I thought I heard blue once, but that turned out to be a side effect of some medication I was taking, which also made me hallucinate a conversation with Ann Miller, but that's beside the point.
I can't say that I've been able to find anyone who heard this broadcast, but I'd be willing to bet I know how it sounded. Now, turn on a recording of The Waltz Song from Romeo Et Juliette, and replace the words with these: "Blue, blue, gree-ee-een, or-ah-ange; Red, red, fu-u-uschia-ah-ah!"
Jeanette MacDonald FM. You can HEAR the colors.
Perhaps that's what's worng with my brain. Due to listening to Jeanette with my FM transmitter all these years, I've been on a 5 year long acid trip.