and each had a certain unique touch - two birds , two flowers , two trees , an old lady and an old man , a cockerel and hen , a hen and a chicken , a snake coiled around eggs with a small snake emerging , and there were abstracts , too - sunrises and sunsets - colourful bands of pink , purple , orange , blue and grey , some with a black silhouette of a single coconut palm or banana tree leaf intruding into the picture .