Hendrix's Cousin in Black, Blue and Purple Haze

Jimi Hendrix's cousin Riki was seriously injured on Monday -- and it wasn't from crowd surfing.

Riki Hendrix was painting the Sudden Dunes Resort in Cali. when he fell 20 ft. off scaffolding -- breaking his pelvis, a few ribs and puncturing a lung. He was airlifted to a nearby hospital where he is still under care.

Riki, who says painting is just a side gig, tells TMZ he can't wait to heal up and go back on tour.