The First one: The white nav bar is hard to see against the yellow header. The color yellow isn't bad, maybe change the nav color. Also the dark gray background look like it has too much gradient! It strains with the text!

Second Design: I don't have too much against it, maybe center the footer nav?? Possibly take that black color down a notch and copy the shading of the corresponding yellowish bars to what ever color you choose. Once again the yellow background with the white text, It doesn't work for me.

Just my personal opinion