Custom Style Formatting should begain with Default values
When I switch from Default style formatting to Custom, the selections that appear are not the same as the default values. This causes a lot of extra work, confusion, and it causes reports to not follow set standards.
Example: I want turn wrap off on my headers. When I do so, the header background color changes. It is no longer the default color. Now I have to figure out what the default color is that was used by the administrator in order for my report to look the same as every other report. This also changed the alignment. The admin has set header alignment to left, but the Custom style has it centered. So now I have to remember to change that too.
This applies to column/row formatting as well, not just headers. But it is most noticeable in headers because of the background and alignment difference.