I have a group of coloured objects that I wish to change the Hue on.

If I use a colour Filter like  Color - Color Shift, it works when the Filter is still active and gone if the filter is removed. 

I want to keep the new colours and remove the filter. 

The only way I can find is to read the new value of each object in the group with the dropper and apply these colours individually.

Is there "Apply filter colors permanently" command?

I tried using colours in extensions but that only worked on individual objects. Not groups.

The extension Color>HSL seems to work on groups here. V.92.2

Thanks. I'm on 1.0 (6e3e5246a0, 2020-05-07)

If I ungroup them and  apply the extension to multiple objects, it works OK. Any sub groups in the selection dont get coloured though.

We'll call that a bug, or at least an extension that is not fully updated for 1.0.

OK. Thanks Tyler. I added it here: https://gitlab.com/inkscape/extensions/-/issues/274

Looks like it's already fixed for the next release.