Virtual 3D conferences are emerging communication channels as a substitution for face-to-face fashion due to the advancement of technologies and the covid-19 pandemic. Current efforts focus on bringing contents into 3D virtual space while delivering them to the color vision deficiency have not been taken into account. To alleviate the stated issue, this paper presents a prototype for color-blind people to simulate the same experience as normal ones. Our method helps users: 1) understand the presented content through adjusted color filtering in such a way that similar colors can be differentiated by the brightness, 2) apparently-identical colors can be varied by the color transformation. Our proposed prototype is demonstrated through three use cases setup in three conditions such as traffic lights, fruit color differentiation, and graph reading in a virtual meeting room. A pilot study conduct with 29 participants shows that our proposed method can improve color differentiation and accuracy for color-blind.