I was able to successfully compile a customized version of the Moodle Mobile app (based on v 3.1.2). So far everything seems to work fine, the only thing I couldn't figure is how to change the orange background color of the header bar, which is shown on the login page. I used a pre-defined URL in config.json. I've tried to specify a background color for the class .bar-header in \core\components\settings\scss\styles.scss, however that change had no effect. Any ideas?
Thank you very much!