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

BORDERCOLOR sets the color of the borders around the frame.

<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>

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.