can't change table border colors

[gib65]

Hello,

Please see the attached document.

It contains a table with some text in it. I want to format the table to have borders on the top and bottom but not on the sides. The borders on the top and bottom need to be purple.



I can hide the side borders and make the top/bottom borders visible. It's the coloring I'm having trouble with.

When I go into Borders and Shading in Table Properties, I set everything like so:



Then I click OK, and OK again, but the top and bottom table borders have not changed their color.