Pages: How to restore original lists styles
Pages '09 or 4.x

Here is a receipe working for Pages '09:


Open Pages, and choose the same template you want to restore defaults,
Select File &gt; Save and save this empty file as Desktop/Untitled.pages
Open the document where styles were deleted, let's say my_file.pages
Select Format &gt; Import Styles... and choose Desktop/Untitled.pages
Select the missing formats you want to recover, and to avoid duplicates, check the lower left box Replace duplicates, click OK
Remove Desktop/Untitled.pages


Pages 5.x

Since Apple removed this function with Pages 5 there are two workarounds:

if (you have Pages '09 available)

then save your file under Pages '09 format and apply the above receipe

else apply the following very manual (and stupid) receipe:


Open Pages, and choose the same template you want to restore defaults,
Create in this file a new dummy text line which will be used as an area to copy styles from
Select File &gt; Save and save this empty file as Desktop/Untitled.pages: this will be the source document
Open the document where styles were deleted, let's say my_file.pages: this is your target document
Create at its end a new dummy text line which will be used as an area to use to paste styles
For (every style xxx to restore) do:


In source document select the 1st dummy line and apply it the style xxx
Select Format &gt; Copy Character Style ⌥⇧⌘C if it is a character style, or Format &gt; Copy Paragraph Style ⌥⌘C if it is a list or paragraph style
In target document, select the last dummy line
Select Format &gt; Paste Character Style or Format &gt; Paste Paragraph Style ⌥⌘V

Remove Desktop/Untitled.pages
In my_file.pages remove the last dummy line