Okay, I have been disputing this with people since I got here. Now, for the last time, the Co-Star Mode Star Cursors in Super Mario Galaxy and Super Mario Galaxy 2 are the exact same color (just like the normal Star Cursors are the exact same color). If you don't believe me, please take a look at this picture comparing the two. Granted, the one from Super Mario Galaxy appears to be a little lighter in color than the one from Super Mario Galaxy 2, but orange is orange.
Now I understand.