tatra ṣaṣṭhī paṭasya rūpādaya iti paṭo rūpādaya iti, vacanabhedaḥ /
In this context, [there is] the genitive [in] "paṭasya rūpādayaḥ" ["colors of the cloth"] [and] "paṭo rūpādayaḥ" ["cloth [and its] colors"], [showing] difference in expression.