While red is often associated with love and passion, using red curtains in a newlywed couple's room might not be the most astrologically sound choice. According to some astrological beliefs, red is a very energetic and fiery color. It can increase the energy levels in the room, potentially leading to restlessness, arguments, or difficulty in relaxing.

Instead, consider softer shades of red like pink or peach. These colors are believed to promote love, harmony, and understanding in a relationship. They create a more calming and peaceful atmosphere, which is essential for a newlywed couple to build a strong foundation.

Ultimately, the best color for the curtains depends on the couple's individual birth charts and preferences. Consulting with an astrologer can provide personalized guidance on the most auspicious colors for their bedroom.