Color of roots for Aerangis fastuosa?

[Paul Mc]

Hi guys, I'm trying to figure out what the color of the roots should be for this little guy. When I got him from Andy's, one leaf was turning a bit yellow and I just figured it was that leaf's time to go. The leaves seem to look fine (perhaps a bit curled on their edges - more so than other orchids I have).

However, the roots shocked me when I saw them! They are the darkest orchid roots I have ever seen! A few were goners so I trimed them, but the rest seem plump and are not mushy or hollow. They are a dark brown color. Is that natural for these?

Thanks guys!