Merge pull request matplotlib#29079 from corvusxi/fix-red-green-cvd-imshow

DOC: Replaced colormap for colorblindness

Author: tacaswell

galleries/examples/images_contours_and_fields/image_demo.py

@@ -30,7 +30,7 @@
 Z = (Z1 - Z2) * 2
 
 fig, ax = plt.subplots()
-im = ax.imshow(Z, interpolation='bilinear', cmap=cm.RdYlGn,
+im = ax.imshow(Z, interpolation='bilinear', cmap=cm.RdYlBu,
                origin='lower', extent=[-3, 3, -3, 3],
                vmax=abs(Z).max(), vmin=-abs(Z).max())