Color is the English equivalent of the Greek root 'chrom-'. The fundamental word in Greek is the noun 'chroma', for 'color'. The noun 'chromosome' is an example of an English derivative of the Greek root. It derives from 'chrom-' and 'soma', which means 'body'.
http://www.medpagetoday.com/Neurology/Autism/5082 Chrom 11 http://autismaspergerssyndrome.suite101.com/article.cfm/causes_of_autism Chrom 16 http://www.medicinenet.com/autism/page3.htm Chrom 13 Or in other words, no one really knows yet, but research is still being done on it.