Why this colour combination?
Using blue, brown and green (and yellow) scientists found that there is no way a colour blind person can confuse which colour is which.
This is how a plug looks to someone who is red-green colour blind.
Using blue, brown and green (and yellow) scientists found that there is no way a colour blind person can confuse which colour is which.
This is how a plug looks to someone who is red-green colour blind.