In another question I tried to answer what a sample of the Sun's photosphere or core would look like, if it could be brought into the lab.
Here is a broader question - if I have a small inert container of gas in local thermodynamic equilibrium, that has the solar photospheric composition and photospheric density ($\sim 10^{-9}$ g/cm$^3$ -i.e. it will be optically thin for a small lab sample), what would it look like (to the human eye) and how would it change as I cranked up the temperature from say 1000K through the solar photospheric temperature to say as high as 100,000K?
EDIT: Just as a steer - I know it will look nothing like a blackbody - that is why I am interested in it and why I emphasize the optically thin nature of the problem.