Wear solid, bright colors. Some call these colors electric or brilliant. Try to avoid earth tones which can look dull. Pick colors that attract attention to you, not cause you to blend in. With casting now being done online the photos that jump out at the casting director or agent are the ones that will more than likely be selected for auditions. Another great tip is to choose fabrics that have a sateen or silk type finish to them. These fabrics look awesome in a color photo.