Replace highlight-symbol with another alternative

[humitos]

It's more customizable. For example,

(setq highlight-thing-limit-to-defun t)

to highlight only things inside the current function. The default face is yellow, but it can be changed easily.

https://github.com/fgeller/highlight-thing.el

[humitos]

I was also recommended to use https://github.com/wolray/symbol-overlay which seems to be better than the other two.