Scale grading explanation: red (out of tolerance positive: too much material) orange (out of tolerance positive: too much material) yellow (out of tolerance positive: too much material. potentially concession possible after agreement by ENx. E.g. deviation is decreasing with age/use of pattern) light green (inside tolerance positive side) dark green (inside tolerance negative side) light blue (out of tolerance negative: too less material. potentially concession possible after agreement by ENx) blue (out of tolerance negative: too less material) dark-blue (out of tolerance negative: too less material)