As promised, here is the track skin needed to make the grass in the center of the track match better. I don't believe it impacts anything else on the track, but please let me know if it does. If you are only interested in changing the grass, just extract and enable the Grass skin from the skins\cm_skins folder. It should work fine with the CM\CSP config for the track.
I also included the my own fork of the CSP config because as usual, I needed things darker than the CSP config. To try my modifications, also extract the files in the extension folder. You can make adjustments to anything I changed if you need things brighter or darker by editing the values for materials in the Shader Stuff section of the config. If you like those changes, then you can extract the files for the two f1 layouts so that those layouts will look the same as the regular track with my config.
Imola Mod