1, Pure White Carpet: The pure white carpet can form a sharp contrast with the red theme, bringing a noble and solemn atmosphere to the whole venue and highlighting the importance of red. This is a common and classic collocation choice.

2. Red carpet: If you want to further highlight the red theme, you can choose the red carpet. The combination of red carpet and red and white will form a unified sense of harmony and increase the enthusiasm and strong emotional appeal of the wedding.

3. Silver-gray carpet: Silver-gray carpet brings a calm and gentle feeling, which is in sharp contrast with red and white, and can balance the tone of the whole venue and create an elegant atmosphere for the wedding.