I have had both white leghorns and brown Leghorns. There is not much difference between them.
From what I have read, the other colors may not lay as well, but are still respectable layers. The one thing all the different colors have in common is the fact that all have very good feed to egg ratios.
I'm not familiar with the colored leghorn varieties but, the whites are excellent layers. You could put "Colored leghorns," in the search box and see what others have to say about them. I'm not a techy person so the I use the searchbox often.
Welcome to BYC and the coop! There's a lot of great peeps here! Feel free to ask lots of questions. But most of all, make yourself at home. I'm so glad you decided to joined the BYC family. I look forward to seeing you around BYC.