यद्विद्युतो रोहितंरूपं तेजसस्तद्रूपं यच्छुक्लं तदपां यत्कृष्णं तदन्नस्यापागाद्विद्युतो विद्युत्त्वं वाचारम्भणं विकारो नामधेयं त्रीणि रूपाणीत्येव सत्यम् ॥ ६.४.४ ॥
In plain words
The red form of lightning is the form of heat; the white is that of the waters; the black is that of food. The lightning-hood of the lightning has gone away: the change is a matter of words only, a name, while the truth is that there are three forms.