Hi Pilou,

re:
> Yes but i want keep that is on the screen and don't want close the actual file...
> Just remake the original Style by default after any gradients

What about select what is on your screen, use Ctrl+C , then File>New, then Ctrl+V ?


re:
> ...and how works the filter? (Ctrl + Click)

That restricts object selection to only work on the filtered items. So for example if you set the filter on Style = Red, then when you click in the viewport (or do any selection action like Ctrl+A or whatever), only objects that have Style = Red assigned to them will be targeted for selection and any other objects not matching the filter will be skipped over.

- Michael