I like the orange color in combination with gray backgrounds. The text in the top of the slider maybe could be in other place.
I think you stand a nice chance if you make this theme Responsive.
Also there is too much spaces between everything try to nero it down… and the upper header with the logo give it more width.. maybe add social on top and would be nice when you hoover the navigation, see the orange box on them.
Great color combination, but it has a lot of spaces that are not used. Overall, it looks great.