Format of test result page

Hi there!

I am working in Lectora X and need to do the following but have no idea where. Tried a search of the forums, so if its a common question, I apologize...

I want to format the pop-up screen which displays the test results to my client's corporate colours, for example the title bar in a different colour. How do I do it and where?

Also, when I preview my test, the pop-up is in default Windows look and feel, but when published to HTML, and viewed on the client's laptop, the pop-up has a black and white look and feel. Why is that?

Thanks to all you clever people out there...!!!

-Tertius