Update the README colors to reflect the screenshot

Author: scottchiefbaker

README.md

@@ -25,7 +25,7 @@ git config --global core.pager "diff-so-fancy | less --tabs=4 -RFX"
 
 ### Improved colors for the highlighted bits
 
-The default Git colors are not optimal. We suggest the following colors instead.
+The default Git colors are not optimal. The colors used for the screenshot above were:
 ```shell
 git config --global color.ui true
 
@@ -34,7 +34,7 @@ git config --global color.diff-highlight.oldHighlight "red bold 52"
 git config --global color.diff-highlight.newNormal    "green bold"
 git config --global color.diff-highlight.newHighlight "green bold 22"
 
-git config --global color.diff.meta       "yellow"
+git config --global color.diff.meta       "11"
 git config --global color.diff.frag       "magenta bold"
 git config --global color.diff.commit     "yellow bold"
 git config --global color.diff.old        "red bold"