I see it as obviously black and blue, but i think the idea that anyone sees navy blue is a misconception and leads to much of the confusion. What i instinctively interpret it as is something closer to sky coloured, but clearly blue.

The black is a bit different because it's very clearly showing up as golden to the camera, but 1) it would be a very fucking ugly colour of lacing, 2) the photo is clearly taken in strongly coloured bright lighting so it's pretty obviously not the colour it looks like, and 3) it's a pretty safe assumption that any dark lacing is just pitch black.

This is basically what i intuitively interpret it as looking like in more normal lighting: