Hi - looks like you have the CFW8 there - if yes then the position is detected by the IR sensor beam being broken by the little white tabs. There are two by the #1 filter position. Resetting the power will cause the FW to go to that posn. And yes it looks like you have interference type filters thus red looks blue etc - ie red filter accepts red but looks blue from the scope side (will look red from the camera side).
http://www.olympusmicro.com/primer/j...avafigure1.jpg