style folder and file icons

[Gopi4330]

<_FullFileBrowser
files={files}
fileActions={[ChonkyActions.OpenFiles]}
onFileAction={handleFileAction}
/>
I'm using the above code for displaying.

using the below code for displaying the icons as default.
setChonkyDefaults({ iconComponent: ChonkyIconFA as any,});

Now I want to decrease the icon size.
Help needed!