osx - Set certain words to appear coloured in iterm2

I am trying to get iterm2 to print certain words coloured (or bold, or whatever) as I am typing them in the terminal. I thought that I can somehow instruct it to check in a dictionary and if it finds a certain word it should apply a pattern, like you can do using the example on their website:

printf '\e\[0;31mplain\n\e\[1;31mbold\n'\ '\e\[0;91mhighlight\n\e\[1;91mbold+highlight\n\e\[0m'

which outputs

Somehow I would like to mimic the vim behaviour in the terminal, but I only need several such words.

I've been looking through their documentation and for similar questions on the internet but I did not find any answer and I suspect it's not extremely straighforward to do.

Is there any way this is achievable? Thanks in advance.