Not necessarily the preferred solution but I had reset my SBC3 and reloaded everything and opencv works and is operational (and detecting red).
Following the phidgets.com directions for setting up OpenCV, the apt-get install libaux-dev command fails telling me it cannot locate libaux-dev.
I have used apt-get search opencv and cannot see a list entry for this package called libaux-dev. I have successfully installed all the other packages indicated in the directions.
Is this libaux-dev package still valid for version 2.3? I appreciate any comment to help me install this package.