.compose-form__publish-button-wrapper button,
.ui__header__links .button {
    background-color: rgba(0, 0, 0, 0);
    background-image: linear-gradient(
            #008080,  /* Teal */
            #191970,  /* Midnight Blue */
            #8B0000,  /* Dark Red (Burgundy) */
            #FF8C00,  /* Dark Orange */
            #FFD700); /* Gold (Yellow) */
    color: #F8F8FF; /* Ghost White */
}