so follow this steps:
1) write and post in the chat "Hiii"
2) go to nitepr menu and go in "find exact value"
3) than search Hiii under the Value.Ascii (do no search hiii but search Hiii because is different)
4) ok now you should have 2 or more values press select on every one and copy in the browser
5) now write ".OK" and do NOT post it
6) now is the hardest part go to nitepr browser and you will see under the ascii ".OK"
7) press on the "." and scroll down or up until the numbers that change in the middle colomn are 15
Cool now press x and exit nitepr
9) post ".OK" and it should be red

try different number to make different colours