How to bulk delete redundant layers that have the same layer-name?

[SophiaDesign (Sophia Tai)]

It seems that some additional (redundant but not empty) Color layers appeared as I was working on a native-color font. This means that all my layers are native-color layers. Is there a way to remove all layers that are named ‘Color’? These appeared on their own, unfortunately I do not recall when this happened.

More detail:

• I can select multiple layers and click the minus button, but I’d like to do a bulk action if possible as I have multiple masters and an already finished glyphset.
• I can not see the extra ‘Color’ layers when selecting multiple glyphs, even when they have exactly the same layers and redundant layers
• None of the redundant layers are empty and they do not contain the same outlines as their master
• All redundant layers are named ‘Color’, and the rest (to keep) have been named after their Master

Here the 4 redundant ‘Color’ layers are visible:

When selecting both glyphs it is gone:

Layers have outlines that do not match the master:

[FlorianPircher]

The following script deletes all non-master layers from the selected glyphs:

for selection in Font.selectedLayers:
	glyph = selection.parent
	for layer in list(glyph.layers):
		if not layer.isMasterLayer:
			glyph.layers.remove(layer)

@SophiaDesign

I can not see the extra ‘Color’ layers when selecting multiple glyphs, even when they have exactly the same layers and redundant layers

When multiple glyphs are selected, only the layers that they have in common are shown, which are the master layers.

[SophiaDesign (Sophia Tai)]

Thank you, this probably saved me a whole day