XPath:: Get following Sibling
===

I have following HTML Structure:

    <table>
    <tbody>
    <tr bgcolor="#AAAAAA">
    <tr>
    <tr>
    <tr>
    <tr>
    <tr>
    <tr>
    <tr>
    <td> Color Digest </td>
    <td> AgArAQICGQMVBBwTIRQHIwg0GUMURAZTBWQJcwV0AoEDAQ </td>
    </tr>
    <tr>
    <td> Color Digest </td>
    <td> 2,43,2,25,21,28,0,0,0,0,0,0,0,0,0,0,0,0,0,0,33,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,25,0,0,0,0,0,0,0,0,0,0,0,0,0,0,20,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, </td>
    </tr>
    </tbody>
    </table>

I am trying to extract the Second "Color Digest" td element that has the decoded value. 

I wrote the following xpath but instead of getting the second i am not getting the second td element.

    //td[text() = ' Color Digest ']/following-sibling::td[2]

And when I change it to td[2] to td[1] I get both the elements.
