Hi,
there is a regression when using a color in a var and we use this var dynamically.
We have attached a minimal reproducer (with a workaround).
To reproduce run `qml BugColorVar.qml` (or build with `cmake && make`). Once clicking on the left side of the window, it will go from blue to red then black. But it should not be black, it should be blue (the right side of the window is the working workaround).
A second issue appears when we uncomment the onPressed signal and the application crashes.

Note: the issue disappears if we activate the cachegen.