HTML inside LaTeX formulas

[Giuseppe499]

Is your feature request related to a problem? Please describe.
I would like to use the amazing rough marker feature inside latex formulas. Currently, HTML inside LaTeX is rendered as math by KaTex. For example this

$$
a + b = <span v-mark.red.circle> c </span>
$$

is rendered as

Describe the solution you'd like
I would like a way to add styling to HTML elements generated by KaTeX or some sort of workaround to achieve the same effect (maybe a way to escape KaTeX renderer?).

Describe alternatives you've considered
I have used the line highlighting feature, but it is not as precise and visually appealing as the rough markers.