Valmiki Ramayana 3.56.6

य एते राक्षसाः प्रोक्ता घोर रूपा महाबलाः ।राघवे निर्विषाः सर्वे सुपर्णे पन्नगा यथा॥

ya ete rākṣasāḥ proktā ghora rūpā mahābalāḥ |rāghave nirviṣāḥ sarve suparṇe pannagā yathā ||

Our plain-language meaning of this verse is waiting for scholar review.