Your child's coloring doesn't look like CMTC to me but remember I am not an expert. My daughter's coloring is always present but does get lighter or darker depending on the temperature. Your child's looks more like cutis marmorata (rather than CMTC) which is common in infants. Becca was initially diagnosed with cutis marmorata. She was correctly diagnosed by a pediatric dermatologist. It would be great if you could post another picture that is more recent.