I'm trying to create a style in which the top and bottom of a range have
different color border. The ranges may have different numbers of rows, and I
want the top border of the top cell in the range to be, for example, red, and
I'd like the bottom border of the bottom cell in the range to also be red.
There are other attributes of the cells in the range (shading, number format,
etc.) that I do not want to change when applying the new style.

I can't see how to do this -- I can only see how to create a new style for
cells, not for multiple rows. Specifically, when I create a style w/ top and
bottom borders defined (e.g. red), and apply it to a range, then all
horizontal lines in the range are red. I don't want the internal lines red,
I want to leave them alone, it's just the very top and very bottom lines /
borders.

Suggestions? Thanks very much,
Alex