@echo off
REM Wednesday, July 15, 2015
REM Robert J. Sawyer <sawyer@sfwriter.com>

REM This batch file changes the apparent background color of Evernote 
REM notes (it doesn't actually change the notes, only their on-screen 
REM display in your personal copy of Evernote for Windows) and it 
REM also changes the color of the field (blank space) behind Evernote 
REM notes.  The former is darkened a little (from #ffffff to 
REM #dddddd); the latter is darkened somewhat more (from #eef1f2 to 
REM #b2b1b3).

REM For the change in the apparent background color of notes to be 
REM visible, the following Evernote option must be enabled:

REM   Tools | Options | General | Enable beta features and updates

REM You must close and exit Evernote before running this batch file.

REM This batch file requires the free utility Swiss File Knife by 
REM Stahlworks, available from: 

REM https://sourceforge.net/projects/swissfileknife/

REM (However, you could actually make these changes by hand with any 
REM hex editor, if you prefer.  In the "sfk" commands below, the 
REM strings to be changed are listed first, followed by what those 
REM strings should be changed to, and the number of times each string 
REM appears in the current Evernote for Windows prerelease (5.8.14) 
REM as of 15 July 2015 is given in comment line just above the 
REM command.)

REM You must edit this batch file before running it so that the path 
REM for sfk is correct for your system:

C:
CD \
CD \Progra~1\Evernote\Evernote

REM This command makes a backup copy of Evernote.exe, just in case:
copy Evernote.exe Evernote.ok

REM This (found 2 times) changes the note's apparent background color:
c:\sysutil\sfk rep Evernote.exe -text "/background-color:#fff;/background-color:#ddd;/" -yes

REM This (found 3 times) changes the field behind the note (in default 
REM Evernote installations, "#b2b1b3" appears nowhere in Evernote.exe, 
REM so it's easy to find it later to change it to some other value if 
REM you wish):
c:\sysutil\sfk rep Evernote.exe -text "/background-color:#eef1f2/background-color:#b2b1b3/" -yes