Nevemind, took a peek at the sourcecode, and edited the a.external-link class on line 458 to exclude the GH repo so it will consider all external links for the cool glowy effect
a.external-link {
color: white;
text-shadow:
0 0 2px #fff,
0 0 4px #fff,
0 0 8px #fff,
0 0 16px #5271ff,
0 0 32px #5271ff,
0 0 64px #5271ff,
0 0 128px #5271ff,
0 0 256px #5271ff;
animation: pulsate 1s ease-in-out infinite alternate;
}
Example:
It does lag in my obsidian though so I may consider playing around with it to get better performance from it.