Ported Win 7 theme changing colors on resume from standby

I've recently used WSB to port my favorite Windows 7 theme to Windows 8.1.1. It works quite well except for one thing: After resuming from standby mode, several of the background colors I've set in the theme turn back to white (as in the default aero theme):

Explorer & Shell > Explorer > Control Panel > ControlPanel > ContentPane: Fillcolor
Fonts, Colors, & System Metrics > Fonts & System Metrics: BtnFace
The background of the Win 8 task manager
Probably assorted others

If I enter standby with the personalize dialog (controlled by the first item in the list above) open, then bring the computer back out of standby, I can see the dialog appear onscreen with the correct colors for a second, but then the background visibly changes to white. At that point, the system creates a new "unsaved theme" (containing the incorrect white colors) and switches to that in the personalize menu. If I switch back to the named theme I had selected before standby, the colors go back to what they should be. The correct colors persist through a reboot.

I tried disabling hybrid shutdown at the suggestion of someone online, but it had no effect upon the theme issue. I tried using the uxtheme service and the patcher to enable the third-party themes (not at the same time); no difference.

Any ideas? Thanks!

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