Feature Request TMP: Custom characters to supplant rich text tags

I use rich text tags extensively, but they add many characters when building the string. I have frequently updating tooltips so this is quite often.

It would be nice if I could instruct TMP to interpret certain characters assigned on the font's asset as tags. For example, I could set up different webdings as an abbreviated proxy for "<color=#123456>" and "</color>".

This would shorten my rich texts considerably.