Red light and green light exhibit different interference patterns when passed through single and double slits due to their varying wavelengths. In a single slit, both colors produce a diffraction pattern characterized by a central maximum and diminishing side maxima, with the width of the central maximum being inversely proportional to the wavelength. In a double slit setup, red light creates a broader interference pattern compared to green light, which has a narrower pattern due to its shorter wavelength. The interference fringes for both colors will also differ in spacing, with red light having more widely spaced fringes. Understanding these differences is crucial for accurately describing the interference patterns in a lab setting.