Interchange

1. Color of Shiva Becomes White as He always Meditates on Vishnu Who is Diety of Goodness(White)
2. Color of Vishnu Becomes Black as He always Meditates on Shiva Who is Diety of Ignorance(Black)

Weapon

http://beginninginformation.blogspot.com/search/label/Trinity

Bhairav Gets Liberated from his Sin

http://usju.blogspot.com/search/label/Sins
http://fa8t.blogspot.com/search/label/Sins
http://shivadurga.blogspot.com/search/label/12Sins
http://laxmivishnu.blogspot.com/2013/11/bhairav-gets-liberated-from-his-sin.html