Feeding silkworm larvae mulberry leaves sprayed with fabric dye results in the dye being transported along the biochemical pathways of the silkworm to produce a colored cocoon and colored silk fibre.
– WTF Fun Fact
Source: https://gizmodo.com/silkworms-fed-dyed-mulberry-leaves-to-produce-colored-s-1476655497
Added!
Where’s the source? I was told there was a source!