Gotcha Matcha is described as a German style Pilsner with matcha. The few comments shown on Untapped are favorable, saying the beer has a nice matcha flavor without being overpowering. A milder matcha like Firsd Tea’s OCG025 Organic Matcha #2 would do the trick when used on the cold side.
One might expect a beer with matcha to have a greener color. If the matcha was infused on the cold side and then passed through a fine enough filtration system, the tea’s flavor would go through without any of the leaf powder. Matcha green tea is a powdered leaf, so the green powder, and thereby much of the color, will fall out of suspension.