1
Image borders are really simple to make or simple to take away.
In your table commands, for instance, you might type
<Table border=5>.
This is what appears on the page.

2
It is similar with images. The image on the right has a border of five. I just typed <img border=5 src="frogcomp.gif"

3
I cannot change the image border color, but I can take it away. Often your browser will insert a border of two by default. I take it away by typing border=0.

4
I can change the border color of a table though, by using the command <bordercolorlight="#00ff00" <bordercolordark="#189234">

Notice the border around the table is two tone. You can get some really neat effects from playing with the colors.
UNFORTUNATELY,
Internet Explorer is the only browser supporting this attribute.