To change the color of a table border inline in HTML, use the style attribute like this:

<table style=”border: 2px solid blue;”>
<tr>
<td>Cell 1</td>
<td>Cell 2</td>
</tr>
</table>

In this example, the table border will be 2px thick and blue in color. You can modify solid blue to other colors or styles, such as dotted or dashed.