Welcome to lesson 18, where we learn colors in Italian and how to use them in phrases. The lesson includes a video demonstrating basic colors, such as rosso (red), giallo (yellow), blu (blue), and nero (black), with a focus on how many colors end with the letter ‘O.’ The lesson also revisits adjectives and their usage in describing characteristics like hair or eyes, with examples like “Lo zaino è nero” (The backpack is black), highlighting that “nero” can be used for both masculine and feminine, singular or plural subjects.