looks awesome but its a bit colorful, if your working on worm holes id suggest this skin for those. Black holes are potentially deadly because of the fact they are extremely difficult to see, just a suggestion but you could maybe instead of all the colorful stuff just have dust particle effects and make it so when you start to get pulled into it it makes everything look different, heres an example: http://www.youtube.com/watch?v=3pAnRKD4raY hope this helps you with more ideas :D
if you ever get the chance you should try to implement a feature like the nether in minecraft where if you get sucked into a black hole you have a 1/1000 chance to pass through it into a freaky dimension which could be a small sector, just one segment, that has some big fleshy void monster or something that tries to kill you, if you kill it it collapses into a wormhole that takes you back to the normal space, or maybe if you cant kill it and had a smaller ship you could fly inside of its mouth and out through the other end back into normal space :D