[BUG] testing tool

[dtatane]

Here's a few points I've noticed while testing the testing tool:

• frame numbering should start at 1, not 0
• load the first 32768 frames of a files if the total number of frames is above
• color rotation is not working
• the window position is not saved as the others of CDMD
• Rewind gets back to the first frame.. Could be better to "play backwards" instead

[zesinger]

• frame numbering will remain from 0 to nFrames-1 as this is how it is in the whole program (and a programmer way to think)
• color rotation now works

[zesinger]

Done