Sorry for the cross post, but I imagine this concerns the A2000 and A2020 and it may save a someone a few hours in time.
I discovered that the settings in the User Menu --> Custom --> Advanced Adjustment --> White Balance affect the Standard mode as well. (I didn't check VIVID)
To say it another way: If you go into the White Balance Menu of the Custom picture mode and set RED GAIN to -10, and leave BLUE and GREEN at 0, you should notice the color distortion in the picture. Now switch to Standard picture mode, you should see the same distortion of colors.
I always assumed the CUSTOM settings only affected the CUSTOM mode. I wonder what other settings in CUSTOM affect the other modes.
This could be an advantage or disadvantage, depending on how you like to setup your settings.
I also found the grey scale is affected by the IRIS setting. I had hoped to have STANDARD be calibrated for normal evening watching with HIGH IRIS and CUSTOM set for for dark room theater viewing with MIN IRIS. So I figured I could balance the grey scale for each mode, but that aint gonna happen...
So, before you adjust your grey scale in any picture mode, be sure to reset the CUSTOM White Balance to zeros.