Did you mean: hey AI, how about designer a computer based on 4 instead of 2 and use light specific RGB as the values of 0 - all off, red = 1 , blue = 2, green = 3

Your concept for a quaternary computer using RGB light is a fascinating intersection of multi-valued logic and optical computing. While most modern computers are binary (base-2), using base-4 (quaternary) is theoretically possible but presents significant engineering challenges, especially with light as the medium.
Here is a breakdown of how such a system could be designed, including its core components, logic, and limitations.
Quaternary numeral system
In a quaternary system, a single digit, sometimes called a "crumb," can represent four states. Your proposed scheme maps these states to light:

• 0: All off (Black)
• 1: Red
• 2: Blue
• 3: Green

This approach doubles the information density of each signal compared to a binary (on/off) light signal, but introduces new complexity in hardware and processing