Richard Ramirez’s skin color turned “a shocking shade of green” before his death from liver failure on Friday.

Night Stalker Richard Ramirez, 53, spent 24 years on death row after a spree of demonic murders in California.

The serial killer died reportedly after “sitting up in his bed doing stretches” just the day before at Marin County Hospital.

Richard Ramirez had been taken from San Quentin’s death row to a hospital before his death.

A source told the New York Post that Richard Ramirez’s skin turned to the ghastly hue on Thursday and was up and moving around his hospital bed.

Richard Ramirez’s skin color turned “a shocking shade of green” before his death from liver failure

“He was the color green,” said the Post‘s source.

“He looked like a green highlighter pen.”

It appears the killer was showing signs of severe jaundice in the final throes of his illness.

The skin and eye whites of a sufferer can change color when bilirubin – a yellow substance – builds up in the body.

Bilirubin is formed when haemoglobin, the part of red blood cells that carries oxygen round the body, breaks down. It is usually flushed out of the body in urine or faeces, but a build-up of the waste product in the bloodsteam can lead to the change in skin color.

Richard Ramirez had been housed on death row for decades and was awaiting execution, even though it has been years since anyone has been put to death in California.

He was convicted in 1989 of 13 murders, five attempted murders, 11 s**ual assaults and 14 burglaries, which terrorized Southern California in 1984 and 1985.

Though Richard Ramirez died of liver failure, the exact cause of the ailment has not been released due to federal patient privacy laws.

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