[keycloak-user] Keycloak - Create Theme

Hello guys, I'm developer and I am using the keycloak in my project. I'd like use my layout. I saw in documentation that is necessary create folder in the Jboss(.../standalone/configuration/themes/). That's all right, but I noticed that in selection themes(My Realm -> General -> Settings -> Optional Settings) the option from my theme not appear. It is correct? Or the option it should show? I'd also like know what is the best practice to create a new theme? Thanks in advance. Kind regards, Vinicius Nakayama