अजंता के चित्रों का मुख्य आकर्षण और कलात्मक विशेषता किसे माना जाता है?

What color lines are primarily used to draw the initial outlines in Ajanta cave paintings?

To which century is the famous painting of 'Padmapani Bodhisattva' in Cave No. 1 of Ajanta dated?