Ask HN: What background to use for online presentation?

As part of a "community day" I am going to do a short presentation, it's going to be online due to Corona and voice only due to bandwidth limitations (big company, terrible VPN, useless security regulations).

My company have a few suggested, but not compulsory, presentation templates but I feel that they are too cluttered for this case.

How wrong will I be to use black text on white background with no patterned or colored background ?