We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
epub image border
When I formatted the Word.doc file for the Print version it was an easy thing to get a thin black border around any images or photographs that required one, using: Format Picture / Colors and Lines . . . This method requires the Layout to be set to 'Top and Bottom' wrapping style in the Advanced tab or the Colors and Lines choices will be greyed out.
..However, to do this for the EPUB version it looks a little different . . . According to the Lulu eBook CreatorGuide v1.4e the wrapping style should be 'In line with text' and in this situation the Colors and Lines choices are greyed out leaving no simple method that I can see of creating a simple thin black line around the images.
Any ideas, other than doing all the images over from scratch again in Photoshop with a manually created thin black line - one pixel wide..?