Because this color symbolizing purity belongs to the bride,

Unless the bride asks you to wear it, that is another matter.

This shows that red is not good. The bride is red.

Suits should be worn, and the degree of nudity should not exceed that of the bride.

Avoid wearing clothes similar to the bride's wedding dress.

The colors should be purple, green, pink, gray, burgundy, beige and so on.

Don't "bump shirts" with newcomers in color and style.

All in all, do a good job of green leaves, "don't compete with red flowers."