180631 Design Internal Data Site

I would like for you to do a design concept for an internal company website that is used to display troubleshooting and statistical data. I don't need anything fancy, I just want the system to look professional like it came from a software development firm and not developed by a geek in the backroom if you know what I mean. I don't have a url to send you as this is an internal site, however, I can send you screen prints of what I have so far. So basically I would like for you to design the graphical layout with colors used, help with fonts style and sizes and the menu structure and display.