Help with configuring with vim-json plugin

[tanelso2]

Is your feature request related to a problem? Please describe.
I'm having trouble where the rainbow plugin where it overrides the syntax highlighting on https://github.com/elzr/vim-json. Ideally, I'd like it to show up in red if there is a missing comma.

I think this can be done with the existing options for rainbow, but I cannot figure it out. I would appreciate your help, I barely know vim code.

Describe the solution you'd like
I would like a config that allows me to use both this plugin and https://github.com/elzr/vim-json, while retaining the syntax error highlighting of that plugin.

Describe alternatives you've considered
I've tried to come up with it on my own, and I couldn't figure it out and need to move on.

Additional context
I'm using the default rainbow config.

Example json I would like to have the errors show up on (missing a comma):

[
  {
  }
  {
  }
]