I have a question about the /Links command. When I do that and its hows the list of servers, it has some servers in different colors and numbers like this (123etc) and I wanted to know what the different colors mean and the numbers mean. Thanks

The numbers are showing the position in the hierarchy. The server you are connected to leads the list with 0.

I'm not too sure about the colours. Sorry.

The colours usually indicate servers that are of equal distance from the server that you're connected to.
Eg: A green server might be 1 hop, yellow - 2 hops, red - 3 hops

If you take a look, you should notice that all the severs that are one colour also have the same number. I don't know why there's both a colour & number, but ....

They might use colors simply as a "quick" way for identifying which servers match whatever numbers.