Hi Paul
Subject to all the usual fibre recognition tests etc. You should be able to remove this colour transfer fairly easily with normal extraction cleaning.
Only on one occasion have I experienced this to be a real problem and that was on a pure white fabric where an eagle eyed customer said they could still see it.... I reckon they were after a new suite as they had realised just how impractical the colour was for day to day lifestyles.
I have seen many attempts, over the years, by consumers to, allegedly, get furniture/carpets changed by claiming faults when all it really was the fact that they had chosen a 'wrong' colour.
Derek