I really like the look of blue mandos, but in my opinion, there's a bit to much red or yellow. All three of the primary colors kind of hurt my eyes a little bit, and I'm sure some others will agree. It's good to have some contrast, but not to much. My suggestion would be take out red or yellow, and switch it for a more common color.
Something like keep blue and red, but switch yellow for purple, that kind of thing.
Also, maybe spread the contrasting colors around the armor a bit more, like stripes on the greaves, maybe make some plates just yellow or red, that kind of thing.
Then again, this is just my opinion and if you like it as it is, go for it!