Hey that is a really nice result! Blending in RGB into narrowband can be tricky but rewarding. You can use the RGB as gap filler as well as for star color recovery.
Congrats on the new Dome - don't forgot to add a way to vent the air nicely around the sides of the dome. Take a look at how the WIYN dome construction with the garage door sides and ventalation around the pier makes the telescope really perform.
http://www.noao.edu/image_gallery/images/d5/00995.jpg
Regards,