This study presents the "ChroMirror" system, a digital mirror imaging system which helps users select appropriate clothing color combinations. By digitally rendering a mirror image of the user wearing clothing in different color-harmonic combinations, this system enables users to easily and playfully explore a wide variety of chromatic and color-harmonic clothing combinations (i.e., without having to physically change clothing). A long-term goal of the ChroMirror system is to encourage users to experiment with colorful and color-harmonic clothes. Keywords Ubiquitous computing, home computing, interactive design, color harmonization, color, dressing, mirror. ACM Classification Keywords H5.m. Information interfaces and presentation (e.g., HCI): Miscellaneous.