4 Abstracts: a series painted together

Here are 4 abstract oil paintings, painted together over a period of a week.  The starting point was to cover the canvasses with random brush strokes in the same color: pale Cerulean blue and Payne's gray - in impasto thicknesses and thin washes.  After all that had dried, I began adding various colors, using palette knife, brushes, finger tips and crinkled up paper.  It was all fun, fun, fun.