The characters can be freely changed and used.
There are various ways to use such as intense hot, intense heat, confirmation etc.
*Updated to version 2. You can display characters for up to 8 seconds.
Usage in Premiere
Select [Graphics] → [Install Motion Graphics Template] from the menu.
In the Open window that opens, specify the folder and file and click Open.
Installed as a template in the Essential Graphics panel.
It will come out when you search for "rainbow".
You can insert it in the timeline by dragging and dropping.
MOGRT