Is it risky to enlarge my shop?

Hi, guys! I am a wholesaler selling laser pen. Recently, I was determined to enlarge my wholesale laser pointer shop. As I only sold wholesale green laser beam pointer pens b4 such as 30mW Green Laser Pointer, so I decided to sell others like red and blue laser pens. Now the problem is that I don’t know how the market of red and blue laser pens is. Having sold high power green laser pens and widely used 50mw green laser pens for many years, I am familiar with the product and the market, but red and blue laser pens are unfamiliar to me so far, I feel it’s risky to have such a start. So could any wholesalers who know something about them give me help or suggestions, I will be appreciated.