How to make root feature Red?!

[aegelsky]

We have root feature and sub-features.
You can switch root feature to "not available", making all sub-features
N/A too.

Then switch one sub-feature this way: N/A - A - N/A.

Root feature'll stay grey after A - N/A switching, but it shouldn't,
'cause there are no sub-features selected!

Does anybody knows how 2 fix it?

[RobertDickau]

I believe you cannot change that, as the behavior is controlled by the MSI engine: selecting a subfeature causes the parent feature to be selected, but it's valid in MSI to have a feature selected without any of its subfeatures, which is why the parent feature doesn't change back to unselected when you unselect the last subfeature.