The strange thing about the brown/rusty dots is that they are flat against his body, but have a white center (pin-head size) that stick out from the body like bull's-eye, which reflects light like an air bubble. <Yes... these are likely "just normal coloration"... I see this on...
31. Matorras R, Ramón O, Expósito A, Corcóstegui B, Ocerin I, Gonzalez-Lopera S, Rodríguez-Escudero FJ. Gn-RH antagonists in intrauterin insemination: the weekend-free protocol. J Assist Reprod Genet 2006 Feb;23(2):51-4. Epub 2006 Mar 22. 255 J Turk Soc Obstet Gynecol 2013; ...