This quote beautifully captures the ethereal quality of happiness as experienced through dreams. It highlights the notion that true joy can sometimes transcend the waking reality, residing instead in the realm of our subconscious where vivid imagery and emotions flourish. Dreams serve as a vivid canvas where life’s colors are intensified and where our deepest desires and fears are played out in an impressionistic manner. The depiction of happiness within a dream suggests that these fleeting moments, though intangible and transient, hold significant emotional value, often more visceral than moments of happiness in waking life.

There’s an inherent romanticism in the idea that happiness can be found in the shadows of our mind, in the misty, fleeting moments that feel almost otherworldly. Dreams are often considered symbols of the mind’s subconscious, revealing truths that are hidden from our day-to-day consciousness, and in this way, they become a pure form of happiness untainted by reality’s often harsh demands. The imagery of 'vivid colouring' emphasizes the intensity and richness that dreams bring to our inner experiences, suggesting that despite their fleeting nature, they can leave a lasting impression on our emotional landscape.

The appreciation of dreams as a source of happiness reflects an optimistic view of the human capacity for joy, emphasizing imagination and inner life. It reminds us that even in transient moments, there is a form of bliss that can elevate our spirits, providing a refuge from the mundane. The poetic way of expressing this happiness, intertwining darkness with vibrant color, evokes a sense of mystery, wonder, and the enduring power of our inner worlds to bring joy amid life's transient and shadowy experiences.