In Sublime Text build 4143, the following steps seem to work for changing the match highlight border color to a desired color, e.g., cyan:
Customer support service by UserEcho
In Sublime Text build 4143, the following steps seem to work for changing the match highlight border color to a desired color, e.g., cyan:
"highlight": "cyan",
{
"name": "Comment",
"scope": "comment",
"foreground": "cyan"
},