1. INTRODUCTION

2. DATA

3. SAMPLE AND BASIC MEASUREMENTS

4. ERROR ESTIMATION

5. STATISTICAL TECHNIQUES
5.1. Linear fitting of color-magnitude relations
5.2. Statistical comparisons of color-magnitude relations

6. COLOR-MAGNITUDE RELATIONS OF EARLY-TYPE DWARF SUBCLASSES

7. COLOR-MAGNITUDE RELATIONS OF DENSITY-SELECTED SAMPLES

8. THE SCATTER OF THE COLOR-MAGNITUDE RELATION

9. COMPARISON WITH STELLAR POPULATION MODELS

10. SUMMARY AND DISCUSSION
10.1. Subclass colors and stellar populations
10.2. The minimum number of formation scenarios