Colour bleeding?
Colour bleeding damage can happen to any sort of rug, although it is more apparent with country or village types. Colour run can happen to “vegetable” dyed rugs as easily as to synthetic dyed rugs. Good chrome (synthetic) dyes are more resistant to colour run than some vegetable dyes. Most rug dyes are acid-fast in the sense that an acidic environment helps stabilize the dye and reinforces the bond of the dyestuff to the wool. Colour run is usually caused by the wash water being at basic pH level. The alkalinity of the wash makes it susceptible to colour bleeds.