Pop Corn Seeds Microgreens-Sprouts main characteristics:

Corn microgreens add a delightful sweetness and sugary flavor to any dish, making them truly special amongst the many kinds of microgreens. Grown in total darkness, they take on an alluring yellow hue that perfectly captures their corn-like essence! 

It will take approximately 10 days of growing until they are ready to harvest - just be sure that if you want them yellow in color it needs total darkness during cultivation!
Even after harvesting some shoots may still turn green so ensure you store harvested microgreens away from light by placing it inside a dark box or container.