Project NExT wrote -
Project NExT (New Experiences in Teaching) is a professional development program of the Mathematical Association of America (MAA) for new or recent Ph.D.s in the mathematical sciences. It addresses all aspects of an academic career: improving the teaching and learning of mathematics, engaging in research and scholarship, finding exciting and interesting service opportunities, and participating in professional activities. It also provides the participants with a network of peers and mentors as they assume these responsibilities. Since 1994 there have been over 1500 Fellows, who have appeared in all capacities in the academic mathematical profession.
Participants are grouped by year, and are identified by the colored "dots" they wear at national conferences. The seven colors cycle: red, green, blue, peach/orange, silver, brown, gold.
For more, see the Project NExT webpage.