I'm currently messing arround with Embarcadero's Bitmap Style Designer on Delphi 10 Seattle. As far as I know, you can mess arround with the objects that Embarcadero gives you, but when it comes to the yet unstyled parts of the control nothing can be found. Also, I know there are ways to create new object styles, more details in its docwiki.
Just so you can know what I'm talking about:
Now, my question is: Is there a way to create a Style for the area circled in red?