I've noticed this and it has bothered me quite a bit recently...
The color "black" in LDD is definitely a dark navy blue. I'm assuming that no one has fixed or can fix this.
Also, I'd like to know if anyone else has noticed this, so I know I'm not being too picky. Someone, please elaborate this annoyance.
For much better reference, here is the color comparison I made:
Thanks for checking my thread out.