Motifs of this interlace are often of classical origin (waves, three-string interlace, pentagrams, net of rhomboids etc.), but while in Roman art it was only used as a frame, here it covers the entire surface. The sheer number and quality of these stone monuments indicates a rich masonry tradition with numerous masters and workshops on the east coast of the Adriatic. Croatian interlace was originally painted in bright colours of red, blue and yellow. Since the wall paintings that are mentioned in several literal sources (for example the portraits of the Trpimirović dynasty in the church of St. George in Putalj above Kaštel Sućurac) are not preserved, they are only type of pre-Romanesque Croatian painting.