Howdy!
With recent discussions around shader design and rim \ fresnel, I decided to try adding this effect back to the 2.09 ambient.
tdm_base01.pk4
(Bug fixed. You can now have bloom enabled!
Recommended setting: r_postprocess_colorCurveBias to 0.35
Installation:
Rename your tdm_base01.pk4 in your darkmod directory and copy this into that directory.