So should he be coloured like the mini comic or should a lot of liberties be taken with his colour?
Maybe not a lot, but they should be allowed to try and make him look the best he can. They didn't use the UK Horde Prime colors on his figure and I think that was a good decision. It's hard to ignore though that Spector is using a lot of purple and has a similar head-mask. Making Lodar more black sounds better, but maybe that'll just look more generic (snake eyes to Sir Laser-Lot's Cobra Commander!). Whatever they can do to make him look his best is what I'd like, even though I recognize that's subjective guidance so maybe not very helpful.