There is no configuration key for the frame color around the unselected found text in Sublime Text 2: the color of the found text border is the color of the cursor. If you want to change it, you must change the color of the cursor.
To change the cursor and the text border color found, set the key value with the name caret in the .thTheme file.
In other words, if you need a yellow text border found, you must also have a hello cursor. For example:
<key>caret</key> <string>#ffff00</string>
It looks like the yellow text frame found and the cursor in the Monokai Yar theme:

Steve hhh
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