A valid background with its valid settings, without those that have their default value.
Undefined if nothing is left, which is the default background. Of the options only what JSON
can hold is kept, since a file and a link keep them as JSON; what they say is not checked, since
they belong to @versatiles/style.
A valid background with its valid settings, without those that have their default value. Undefined if nothing is left, which is the default background. Of the
optionsonly what JSON can hold is kept, since a file and a link keep them as JSON; what they say is not checked, since they belong to@versatiles/style.