threadbit row highlight for post with zero replies

[LifesGreatestGift]

the conditional you need to use is

vB3x

<if condition="$thread[replycount] == 0">style="background-color:#FF0000;"</if>

vB4x

<vb:if condition="$thread[replycount] == 0">style="background-color:#FF0000;"</vb:if>

in the threadbit template. you can place it as a style for the
main <li> element by adding a background color or use as
you wish.

Just guessing, could be wrong. havent tested it, but its a place to start.