I just recently purchased this game, and I am quickly getting frustrated with a few issues, mainly research.  I keep going into the research section & selecting certain things, and see at the bottom that it says it is researching the last thing I clicked on.  I know it can research multiple areas because I have had it tell me that research has been completed on multiple items in the same turn, but when I go back to check on progress of other items, I see that research had stopped on those.  Is there a correlation to the color coding that you can only research 1 item of each color at any given time?  If that is it than why is it that sometimes it will be the only item of a certain color that gets dropped out of research?  Other times, I will complete research on a certain tech and the next message, in the same turn, will tell me that I completed the next thing in that branch on the tech tree.