Add "Showing Color Chips from Sass Variables" post

Change-Id: I72c45958441abaf2a7ed12f6bddc21daf4e25742
Reviewed-on: https://gerrit.causes.com/23389
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Jimmy Kittiyachavalit <jimmy@causes.com>
Reviewed-by: Greg Hurrell <greg@causes.com>
Optimize hashing for the homeless post PNG

Using:

  for file in *.png
  do
    pngquant --force --ext .png --speed 1 $file
    optipng -o7 $file
  done

Change-Id: I87ff1d1b6ea61c8cea05362b54dd3572d5b84a11
Reviewed-on: https://gerrit.causes.com/23390
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Jimmy Kittiyachavalit <jimmy@causes.com>
Reviewed-by: Greg Hurrell <greg@causes.com>