What is the relationship between Razer and colorful rainbow?

There is no relationship between the two brands.

Razer is a brand of game equipment, and its logo is the iconic three-headed snake logo. Razer, which has fans all over the continents, has designed and built an integrated ecosystem to provide players with hardware, software and services. Razer hardware products include high-performance gaming peripherals and Razer Blade series gaming notebooks.

Colorful Technology Development Co., Ltd. is a well-known DIY hardware manufacturer in China. Colorful former life experience and information company was established in 1995, as an agent sales company dedicated to the value-added business of IT channels. Colorful graphics cards have become one of the famous graphics card brands in the market.