Hi guys, I can't figure out how I can change gobos or colors from a fixture I added to my projects. Here's what I did so far: 
1.  I added the fixture "MUVI Halo Mini" from PURElight to my project. Gobos and colors are missing for this fixture. 
2. I selected the fixture, in the properties I doubleclicked on color wheel and gobo wheel and created 2 new frame lists. I can see them in the designs tab -> frame lists.

How can I modify the frame list of the fixture (e.g. replace the "missing filter" icon by a png / jpeg file with the matchting color)?  When I open the color frame list and right-click on any "missing filter" icon, I can see a command to add a frame, to delete a frame or to empty a frame. But how can I add the correct color icons or colors at all?