Even if vsc is turned off and turned on again So that the color marked (highlighted) on the text is maintained as it is what should i do to do it?

[gkcc0625]

After marking (highlighting) the text like this
Saved.

And if I turn off vsc and turn it on again
The color marked (highlighted) on the text disappears.

Question 1) Even if vsc is turned off and turned on again
So that the color marked (highlighted) on the text is maintained as it is
what should i do to do it?

Question 2)
How can I make more variety of colors?

You're making good use of it! thank you so much...