[_kush]

I am using a database with Resene color names (and some names from the Wikipedia colors list) mapped to specific hex codes. I find the closest hex code from the database to the one in your camera and show the name associated with it.

Hope that answers your question!

[mkl]

You could also use the layperson-supplied colour names from the XKCD survey:

https://blog.xkcd.com/2010/05/03/color-survey-results/

http://xkcd.com/color/rgb/

It took colourblindness into account.