Mismatching upper and lower anodizing
For an over all investment of around $500 (not including sights and red dot) and some time to put it together I am extremely pleased with this build.

My Spike's Tactical upper and lower didn't match, either. Same thing with my BCM. I don't think you understand how the anodizing process works.
You are right, I know nothing about anodizing. But I've seen TONS of builds and the difference is minimal. The NEA upper is purple-ish and their lower is gray.
Why?
You should have left out the I know someone and limited it to I had a problem or I didn't.
I figure there's some value in heresay. I have neither owned an NEA nor known someone that did. Leaving out the 'I know', I get 61%, as of this posting, owners reporting problems. Crazy.
It will basically vary by batch and how you do it (there are different methods to anodize aluminum parts). If you want a matching upper and lower the very best thing to do would be to do them at the same time and some factors come into play when it comes to the colour. My Spike's upper also has a purple hue but it's just a colour - it doesn't matter to me as long the finish is applied. I understand that some people like having matching parts. Some companies are very good at being very consistent with the process and thus have matching colours for their parts. A lot of companies also send their parts to be finished by third-party companies in batches at different times so the colours may vary.
I figure there's some value in heresay. I have neither owned an NEA nor known someone that did. Leaving out the 'I know', I get 61%, as of this posting, owners reporting problems. Crazy.
Not much value in "heresay", especially the way the question is worded.... everyone in the black and green rifles can say "they know someone with problems"....I know Hitzy had problems...I know Deagle had problems. I know one of the guys I shoot with regularily had a defective bolt so if I report that and he reports that what value is there in that information?



























