Thank you for the kind words!
Could try the following steps to see if it solves your problem?
0. Clike the “2D Settings” button
1. In the popup “Specify 2D Output Options” window , click “Contour Colors” button
2. In the popup “Color” window, click “OK”
3. Back to “Specify 2D Output Options” window, click “Save and Close”
4. Try again to see if it works.
You may also want to apply the hotfix (which is updated several times a day) to update LEAD to latest pre-release version. It might also solve some issues. To do so, you could either use “Apply Hotfix” from “Install” menu, or download the hotfix from here and then extract it to LEAD directory.