This document discusses color matching for input imaging devices using the Oyranos CMS SANE and oyRE backends. It provides an overview of what these backends are and their current status. For the SANE backend, functionalities like the communication protocol and identifying devices are in place but aspects like remote ICC profiles and SANE API updates need work. The oyRE backend is almost functional but could be improved by re-evaluating protocols, gathering user input on RAW options, and better integrating with color management systems. The document calls for help from communities to improve these backends.