individual colors for bars

Is it possible to adjust each bar to a different color instead of having a global color setting?

I want to have the option to have a red, yellow or green color for each faq post. Instead of choosing a color theme. This will allow my readers to know the difficulty level for each question.

Also I would love to know if I could make some of the faqs only available to certain viewers. (This would allow our ‘help desk’ to have all information in the same location yet not let our customers get into the answers that require advanced code work.)

I am a newbie to WP, so if possible please provide detailed advice. I really appreciate it!
My site is for our customers only so unfortunately I can not share the link.

thank you, your plugin runs perfectly and is so easy to use!

https://wordpress.org/plugins/aspire-smart-faq/