Application { background-color: #333333; /* behind the map. Spark default is #FFFFFF; */ /* affects only non-Modules : HTMLPopup (SplashWidget and "About") */ color: black; /* affects only title/subtitle (unless .BannerTitle is in this file) and non-Modules : HTMLPopup (SplashWidget and "About") */ font-size: 12; }
However, in version 2.1 of the ArcGIS Viewer for Flex (once it is released) you will be able to set the main colors in the main configuration file.