FS2004 BlueSphere Project Comparison Preview. FS2004 Bluesphere preview screens. This project was started in an attempt to add realism to the default seasonal environment by means of color and brightness adjustment. The well balanced result makes a fine looking picture at every altitude, even on the ground. Because perception of reality is different to all individuals, these comparison screens were created for you to decide if this is an improvement or not. So before starting to download the seasonal packages, download or view this file to get the link to the website that contains the preview screens. By Gerrit Kranenbarg.