Color Genomics, founded by ex-Googlers, is an at-home test for BRCA 1 and BRCA 2 mutations.Last month, the film star Angelina Jolie Pitt had her ovaries removed—a response to learning that she has a damaged BRCA1 gene, which indicated that her chances of contracting breast or ovarian cancer in her lifetime were around 80% and 50%, respectively.