Agree with Ivan, had a similar thought myself playing yesterday. CRT scanlines and blur are perfection but colors and contrast are slightly off, curved Boob Tube also have a bit too much flicker which I cant disable no matter what, crt geom scanline weight disables this flickering but makes everything too bright so, it appears there are too many interconnected values for me to tweak on my own without knowing what does what.
I made some tests and displayed screencaps from retroarch on my CRT and then compared them with my monitor, the color was pretty much the same as standard retroarch. Not sure whether scanlines and shadowmask without color correction would looked good though, after all they change image by itself so it is possible image would be too dark or washed out.