Mozilla PNG-Icons on different backgrounds

full background icon full transparent background icon half transparent background icon
full background icon full transparent background icon half transparent background icon
full background icon full transparent background icon half transparent background icon
full background icon full transparent background icon half transparent background icon
full background icon full transparent background icon half transparent background icon
full background icon full transparent background icon half transparent background icon
full background icon full transparent background icon half transparent background icon
full background icon full transparent background icon half transparent background icon
full background icon full transparent background icon half transparent background icon
full background icon full transparent background icon half transparent background icon
full background icon full transparent background icon half transparent background icon
full background icon full transparent background icon half transparent background icon
full background icon full transparent background icon half transparent background icon