How can I change the update color (default is red)

[TrylobitBroccoli]

I want to change the color of the value before it gets send, but it doesn't work. How can I do it?

I've tried to put in styling:

    style: |
      .upd{color:grey}

and

    style: |
      .upd{color:#808080}

but that doesn't work.

[htmltiger]

.cur-num.upd{color:grey} should work