setWelcomePageEnabled(true) but the screen is visible only for 2 sec when i disconnect the call and setColorScheme also not working for me ....i m testing on android native ....need help for customising

setWelcomePageEnabled(true) but the screen is visible only for 2 sec when i disconnect the call and setColorScheme also not working for me …i m testing on android native …need help for customising

JitsiMeetConferenceOptions defaultOptions
= new JitsiMeetConferenceOptions.Builder()
.setServerURL(serverURL)
.setWelcomePageEnabled(false)

            //.setColorScheme(colorscheme)          //not working
           // .setFeatureFlag("chat.enabled",false)  //working
           // .setColorScheme(colorscheme) //not working

            //.setWelcomePageEnabled(true)
            // .setFeatureFlag("invite.enabled",true)  //not working

            //.setFeatureFlag("live-streaming.enabled",false)
            //.setFeatureFlag("recording.enabled",false)    working  //where can i find the saved recording
            .setAudioMuted(true)         // working
            .setVideoMuted(true)           //working
            .setSubject(" MeeTTest") //working
            //.setRoom("120") //not working ...crash
            //.setAudioOnly(true) //working
           // .setToken("007")
            .setUserInfo(userInfo)    //avtar working

            .build();
    JitsiMeet.setDefaultConferenceOptions(defaultOptions);

Hi, Any Solution for setColorScheme issue ?