I've had the black GA-100 for over a year. Tough as nails, has spent time in pools and oceans. Yellow has always caught my eye. Who needs two colors of the same watch? Turns out I do. The yellow makes enough noise to get noticed, but not enough to be obnoxious. Compliments abound. Big watch. Couldn't be happier. (Now, do one in army green, or ANY green, Casio.)