How to colorize text boxes in Premiere or AviUtl

I do not know if this method is the shortest, so please let me know if anyone is detailed.

I think that it is common to insert a text box when you insert a text in video editing, but I do not know how to easily add the background color.

I want to operate as easily as PowerPoint.

For example, in Premiere there is no background color setting in the text box’s edit menu.

There are many ways to add a background color, but the easiest way is to insert a text box and insert a graphic → new layer → a rectangle and place it behind the text box.

The same is true for AviUtl. When we want to put a background color, it takes a lot of time and effort.

There was also a video with a background color in the text background script, but this is more troublesome. Or perhaps this feature itself is great but it doesn’t fit my purpose.

Tell me the easier way ~

※for your information
Use the telop base material indivisible