Interesting discussion.
Here is an image of the Tarantula by one of the best in the business R.J Gabany.
http://www.cosmotography.com/images/small_ngc2070.html
Of course the blue is a deliberate effort to impact on the image.
I have been doing astrophotography/astroimaging for 18 years and it is a shame so much artistic license is used these days.
Clear skies
Steven
http://users.westconnect.com.au/~sjastro/small/