I just bought a used 2007 with perforated leather seats that I would describe as tan. When I look up the interior options for that year, however, the only one of the three options that seems to apply is "cashmere." There is a headrest missing on the rear right seat and I have been looking for one on e-bay and the only one's that seem to fit the bill are described as "tan" and look more creamy and less orangey than my interior. Should I go ahead and buy and hope for the best? Also, I have my iPhone recognized by the infotainment centre and have programmed in some numbers in the phonebook. But it possible to somehow activate the mic and have it dial a specific person by name?

 

Tan is correct. The color difference is probably due to lighting and cameras etc. There was only one shade of tan or cashmere. The other colors were gray and black.
https://www.autobytel.com/lexus/es-350/2007/color/

I recommend you start another thread with your iPhone questions, but first try some searching as it has probably been asked already.