How can I convert a black-and-white PDF into a colorized version?

Hi everyone,

I’m a middle-aged lady who loves learning new things but often finds modern technology a bit challenging. I recently came across a situation where I need to turn a black-and-white PDF into something more colorful. It’s a project I’m working on, and I believe adding color would really make it stand out.

I’ve tried tinkering with a few tools but haven’t had much success. Can someone recommend an easy-to-use method or software for this? Simple steps or beginner-friendly suggestions would be greatly appreciated!

Thanks in advance for your help.