It may not have anything to do with it, but still the only thing worse than starting and failing is not to start at all ,So after this little introduction my answer for now is:
Gold is my meal;
Gold-means the sun,The shadow is physically created by any body that returns a certain percentage of the energy (light, In nature sunlight ) that harms it. Some of the energy is reflected according to the angle of impact and some of the energy is reflected in diffuse fashion in all directions
Silver, I free;
silver-moon,At night the shadow is seen only occasionally, and is not visible at all on nights when there is no moon
My colour reveals
How my converse did be.
Light can reach the shadow region from other sources, or from the main source indirectly, through repetition or bypass. If there is no light at all, it looks completely black ("full shadow"), or if it looks dark relative to its surroundings (partial shadow), that means that some of the light has reached the shadow region. The most frequent use of the word shadow is in the context of concealing sunlight.
The light I close Must break for all; -Without light there isn't shadow
The unseen grows Amidst my fall.-The saying goes: "When small people cast a large shadow, it is a sign that the sun is setting" - that means that a shadow can increase things that a person doesn't see so much