As shown in the image below :

i.imgur.com/J1mPNM5.png (Sorry for posting the image in this way, I am not allowed to post any images since I am new to this forum...)

There is a black frame surrounding the class icon,

and I would want to know is it possible to remove it...

I tried to modify the ClassWidget.lua which inside the TidyPlatesWidgets folder, but it doesn't seems work...

Can anyone please tell me which .lua file need to be modified ?

Thank you.