How can i modify the gizmos generated by rigify?

I want to change the size or placement of some of the gizmo. For exemple, I used a limb chain on the cat ears and the gizmo are realy tiny since a scaled down the bone chain a lot to feet the ear size.

I tryed to select the gizmos and go to editmode, but then I dont see the gizmo anymore so I guess it wasent the way.

Select the gizmo (bone) you want modified…
then goto the Properties Panel > Bone(the bone icon) > Display > Custom Shape
there you should see the custom shape that is connected to that bone…
usally these are stored on the last bone layer…
which you can access… via…
Properties Panel > Armature Object Data (the little man icon) > Skeleton > Layers:

note bone Layers are not the same thing as Object Layers…

find the object connected via that bones “custom shape” and change it…

I just figured it may have somthing to do with the layers but not the rest so I m happy I come back to see if somone knew.
I will try that. Thx.