Video of him, driving his car:
His daughter-caregiver also mentioned:
"...Yes his skin is changing like a snake. His skin is now like normal color. He never got lighter before he was always bronze skinned. 4 seasons went to swimming and sunbathing. For his entire life".
This leads to some suggestions, from acupuncture theory.
She told, his skin is now, like it was last year, before GBM started, on a pic him having a sunbath on a snow.