How can I add a colored text box on the right side of my notes?

What I’m trying to do

I want to add a colored textbox on the right side of my notes

Things I have tried

Have a look at Callout Adjustments - SlRvb’s Documentation - Obsidian Publish.

You can also search here or on Discord for “infobox” or “asside” callouts.

It seems like that’s what you are looking for.