ToonSquid 2.0.20 comes with a floating color picker and the ability to duplicate and copy multiple selected drawings in multiple animation layers at once.
Drag the handle at the top of the editor's color picker to convert it into a compact floating color picker which you can place anywhere on your canvas.
You can now copy and paste a selection of multiple drawings even if the drawings are in different animation layers.
The duplicate button in the timeline will now duplicate all selected drawings at once.