How to change font color after accepting zsh-autosuggestions' recommendation - zsh

I used to use fish, which has this realy useful and good autosuggestion.
Recently I tried to start using zsh and install the zsh-autosuggestions plugin.\
But I noticed that if I accept the recommendation of the plugin, the font color won't automaticcaly change back to the normal color, remaining the fg value set in the zsh-autosuggestions.sh file.
In fish, the font color would look the same in both accepting and typing condition.
I'm using zsh 5.9 (x86_64-pc-linux-gnu) in arch with oh-my-zsh.
I tried to change the theme (lambda or headline) and the terminal (alacritty or yakuake), but nothing happened.
Is it normal? Or there is something that I messed up.
Thank you so much for your help.

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This answer to a related question seems to address your issue (I have not tested it myself):
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