Shyam avo te rang mune is a prayer to God. It is used in most of the Hindu mandirs. The name of God is changed at the end verse...like shyam or ram or yogi raj depending on the faith.
It says that the effect of God on the singer is a powerful one. The colour of god is so stirring on my soul that there is no possibility of any other colour to be painted on. There are six verses. The first verse says about the singer visiting the God's original village, in this case Bhesan of Gujarat state in India. My heart is elated after visiting Bhesan. My love of yesteryears has been rejuvenated. The village Bhesan is also changed to other village's name depending on the place of the God's residence.
References
Shyam avo te rang mune Wikipedia(Text) CC BY-SA