Final answer:
Ky painted Cassia in a yellow dress with blue and red details, potentially symbolizing a goddess or maiden in the artwork.
Step-by-step explanation:
When Ky painted on the wall, he depicted Cassia in a yellow dress with details in blue and red. This color scheme is evidenced by remnants of paint on the wall, as well as certain thematic elements that suggest Cassia may represent a goddess, such as Artemis, or perhaps just a maiden. The presence of animals painted on her dress lends depth to the interpretation of her image and role within the painting.