So i have been playing around with the idea of a world that due to its orbit (it is both quite a bit away from it's parent star and due to its orbit permanently between two much bigger planets) has something of a permanent night going on (brightest part of day would look like twilight on earth). The planet is however not frozen becuase it is heated by internal processes. The race inhabiting this world primarily lives inside humongous cave systems that are naturally lighted by fluorescent/phosphorescent (i Always mix those up) Crystals verying from pebble to boulder/column size.
So i kinda figured that a race living in permanent low light conditions like this would probably have a very light (if not outright milky white) skin and probably red eyes (i sure do not plan on making them blind)
What i want to know is, taking into account my world description above, if my idea of how they should look (light/pale/white skin and red eyes) is realistic and if not what would be more believable in terms of outward appearance