NADAMODA Unisex Clothing Series of Zodiac Signs--Gemini. Yellow is the lucky color of Gemini, because of the appearance of yellow, Gemini can always keep a clear head. Gemini people tend to like new things. Chatting with Gemini people may make you feel excited, because the new and strange things in their minds will make you curious. When we paint, we paint the sun yellow, because yellow represents brilliance and hope. In yellow, Gemini will be more vibrant.