Can I change the widget color somewhere?

Same problem. I fixed it before in the previous version but can’t remember unfortunately. If anyone has any clue, please respond. Thanks!

Just figured it out again:

Go to the Plugin Editor…

wp-activity.css

Change to the following

#act_wrap{
width: 350px;
background-color: none;
padding: 7px;
border: //removes white border
}

#act_admin_icon{
background-color: none; //removes white background
background-image: url(img/icon32.png);
background-repeat: no-repeat;
}