How to invert video slide show

[reuven10]

I wish to use slide-show (usually charts and graphs, Black & White)
in a video-inverse mode, that is, white lines / letters on a black background.

Could not find any reference to this issue in the Help, KnowledgeBase and FAQ sections.

Any suggestions / leads?

TIA

[mahfiaz]

If these are images then you could just invert their colors before opening with LO. If these are objects, then changing colors of all of them is possible, although a lot of work.