Attribute for <FRAME ...>
BORDERCOLOR = color expression

BORDERCOLOR sets the color of the borders around the frame.

this code	produces this
<FRAMESET ROWS="*,*,40%,*,*"> <FRAME SRC="bcRow1.html"> <FRAME SRC="bcRow2.html"> <FRAME SRC="bcRow3.html" BORDERCOLOR=RED> <FRAME SRC="bcRow4.html"> <FRAME SRC="bcRow5.html"> <NOFRAMES>NOFRAMES stuff </NOFRAMES> </FRAMESET>	this page

Some versions of MSIE have a bug concerning BORDERCOLOR and can't figure out which borders should be which colors. It's not a harmful bug, but often the colrs won't be arranged the way you expect.