how to get default background color?

Hi luojiandanPBI,

It's not possible to obtain the details on the background color of the container. I have previously asked for this, but MS has declined to implement it. If more developers request it, it may suggest a greater need for this in the community.

Bear in mind that the report canvas may have a specific color applied, and the visual container won't know about this, so it wouldn't be entirely foolproof.

Regards,

Daniel