There is nothing taboo about wedding red envelopes. These red envelopes are all wrapped in red paper. The amount in the red envelope can be determined according to your local customs or income. Dark red wedding red envelopes can't be bad.
Wedding is a religious ceremony or a legal notarization ceremony. Its significance lies in gaining social recognition and blessing, preventing bigamy, helping newlyweds adapt to new social roles and requirements, and preparing to assume social responsibilities.