// inside on click event
MorphingButton.Params circle = MorphingButton.Params.create()
.duration(500)
.cornerRadius(dimen(R.dimen.mb_height_56)) // 56 dp
.width(dimen(R.dimen.mb_height_56)) // 56 dp
.height(dimen(R.dimen.mb_height_56)) // 56 dp
.color(color(R.color.green)) // normal state color
.colorPressed(color(R.color.green_dark)) // pressed state color
.icon(R.drawable.ic_done); // icon
btnMorph.morph(circle);