Color Matching: Consider which color complements your existing dishware, kitchen decor, or personal style the best. If you have a lot of blues and cooler tones in your kitchen, a blue gradient might blend in nicely. Conversely, if you have warmer tones or want something that stands out, the purple gradient could be a great choice.

Mood Influence: Colors can influence mood. Blue is often associated with calmness and serenity, while purple can denote creativity and luxury.

Visibility of Stains: Lighter colors and some shades of blue might show stains more visibly than deeper colors like dark purple.

Trendiness: Depending on current trends, one color might be more fashionable than the other. However, trends change, so choosing a color that you personally like might be better in the long run.