Change contentItem color without importing implementation

[fear2137]

I want to change Fusion theme color for BusyIndicator
for now I found 2 solutions:
Importing implementation and modifying the entire contentItem
using Component.oncompleted and setting id.contentItem.color=
however both of these solutions are hacks and are ugly, is there an easier one? I dont want the color to be tied to some pallete, I want individual control over every element.