I was able to find to change the color of the internal links:
.cm-s-obsidian.mod-cm6 .cm-hmd-internal-link {
color: #ff0000;
}
But now I would like to take a next step and be able to color links that point to a specific path, in my case to DEVONthink and Bookends, which have a specific format. For instance (up to // the permanent part):
x-devonthink-item://4DEE640A-5EF4-49DE-A6A5-F741D554627F
and
bookends://sonnysoftware.com/98203
Can anyone help me out?