[keycloak-user] Cannot get themes to work as expected

Hello, I am trying to create a new theme, similar to the keycloak theme, but with my custom logo and some minor changes. so i copied the default keycloak theme to a new theme name directory. I was expecting the theme to be "exactly" as the keycloak theme, with the changes I have done. But its not substituting the kcXXXX values in ftl files, that are provided in themes.properties file. For example the themes/base/login/template.ftl has ftl variables like "kcHtmlClass" and "kcContentClass". The values are mentioned in theme.properties file of the respective themes, but these values are not getting picked up from my new theme. What am i doing wrong? I am not able to make this work. Please help. Thanks, Subhro.