Settings: change the color mode preview image

Change the color mode preview image to better illustrate the difference
between Natural and Boosted color modes.

Bug: 138126243
Test: manual testing on Pixel
Change-Id: I367b383f9f2da9b2e2d5960e51c3ec7821d4915b
(cherry picked from commit 56574d5924727ccc95a65c088375ca4b95bd8e79)
diff --git a/res/drawable-nodpi/color_mode_preview.jpg b/res/drawable-nodpi/color_mode_preview.jpg
index 51dedbf..804bcf1 100644
--- a/res/drawable-nodpi/color_mode_preview.jpg
+++ b/res/drawable-nodpi/color_mode_preview.jpg
Binary files differ