It is possible to change the size of Frame in the TimeItem in GTP.NET? Something like .FrameColor…
Currently there is no property to control the drawn FrameWidth on the TimeItemLayout. Putting it on the todo list… If you want it be zero, you can set TimeItemLayout.FrameColor=TimeItemLayout.Color.
Other than that I suggest that you go with a user drawn time item. You can then draw a standard time item with the TimeItemDraw.Draw call, and then frame the time item with your own width-frame.