The affix kan is added to the word kāla when it means a passing colour or dyed with colour.,
The word वर्णेच अनित्ये and रक्ते are both understood here. Thus कालकं मुखं वैलक्ष्येण \the face black with shame or confusion\. कालकः पटः 'a cloth dyed blue-black'. कालिका शाटी ॥,