Charred
This item applies Chr to a colonist's genome via design update.
Charred: Chr Chr – Chr cr – Chr prl – Chr chr
The Charred gene is on the same gene pair as the Cream complex. That means that you cannot have a Cream and Charred colonist at the same time, nor a colonist with both Pearl and Charred.
This gene darkens the base coat. Unlike colour tints, it does not necessarily desaturate the base coat - sometimes it can even cause it to become even more colourful.