Blue and yellow look awesome. Blue and blue look fine, I can take or leave that look in general, but the blue and yellow are awesome, love that look. While I'm not a fan of gradient in general, they look fine on the uniform.
The bone and bone look is weaker, but seeing them in action in some other videos and photos, I like them more than my initial reaction. Additionally, I think if the NFL relaxes the helmet rule as expected, they may do a bone helmet with blue horns, and I think that would be really nice looking. I'm debating making a mock of it myself to see how it would look, but I have a feeling if they were to make that simple change it would make a big difference.
I've seen people show the bone top with blue pants and yellow pants and both look good, especially the yellow pants. I have to imagine they'll roll with that combo at least once.