What is the parameter to configure the color of the first line (and the body text) of the commit message editor of git? (In case that matters, I am using vim as an editor).

I have found many related resources, but none of them gave the option to specify this color. (For the records, the most relevant hits were the following:

• https://gist.github.com/rab/4067067
• Git - Do colours mean something in the editor that opens when I commit?
• https://unix.stackexchange.com/questions/44266)

I am beginning to suspect that this option has to be configured somewhere else (e.g. in bash or in vim)...