You need to choose different colors according to different varieties when picking. The following are the common varieties and picking characteristics of rainbow peppers:

1. purple variety: the fruit is dark purple when it is ripe, and the texture is crisp. You need to handle it carefully when picking, so as not to damage the fruit.

2. Red variety: The red color is bright when the fruit is ripe, and it can be picked after the fruit changes color.

3. Yellow variety: when the fruit is ripe, it is yellow and full in appearance, and can be picked after the fruit changes color.