The Dashboard is here on the bottom of the Plurk Page.  It’s not the whole bottom part just the box around the Profile, Stats, Friends and Fans.  It’s easy to separate its look from the background.  To change it go to the top left corner of the Plurk Timeline where it says My Profile and click on the edit link.

Enter the following:

#plurk-dashboard {
    background-color: #ff4e4e;
    color: white;
    border: 2px solid white;
}

That’s it!  Have fun!