The table set background menu only proposes colors from the default palette (unlike the character color button, for example) Other palettes are not available, which reduces their value considerably for documents with tables
This limited background color selection also applies to Conditional Formatting backgrounds in Calc. If fonts have options for custom colors and different pallet selections, then backgrounds should too.
Ok, NEW.
Lets collect the issues for missing palettes or access to a different area style in bug 105225. *** This bug has been marked as a duplicate of bug 105225 ***