Thank you very much.
I changed the color of the slide video (master slide) to black and changed the color of the asset icon of the overlay slide to various colors instead of white, but the color is displayed on the work screen with CP and the preview screen with F11 However, it is gray when publishing.
Can you think of other causes?
The first screenshot image is the CP operation screen. The second piece is the preview screen. The third page is the publish screen.
Please insert the screenshots, do not attach them.
It looks indeed as if those icons are transparent and show the video below. Which master slide did you use for the video? Which for the content overlay slides? I hope it is the Blank master slide, and - due to the color of the video - with a solid black background.
Must have missed it in the first screenshot. You create an interactive video in a Fluid Boxes project???? Or is this a Breakpoint views project? This overlay slide has no fluid boxes, which is OK if you set up the Position Properties.
I just published this blog - coincidence:
http://blog.lilybiri.com/fluid-boxes-and-interactive-video-position-properties-panel