Yellow is read as light, warmth and a clear mind. Folk dream books also give it a second face: caution and jealousy. Bright yellow flowers or sunlight point to optimism and new ideas, while a faded or sickly yellow is read as worry or fading energy. A yellow room or yellow clothing suggests cheerfulness or a wish to be noticed. Yellow signs and lights are taken as a call to slow down. The feeling the colour brings in the dream decides which face it shows.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.