Revert "changing background color for demo"
Revert "changing background color for demo"

This reverts commit a6ec53be509cc4f4b2b15c1fb59cd1b518e9b214.

calh/openid_connect_sample,calh/openid_connect_sample,calh/openid_connect_sample,nov/openid_connect_sample,nov/openid_connect_sample,gbirchmeier/openid_connect_sample,nov/openid_connect_sample,gbirchmeier/openid_connect_sample,gbirchmeier/openid_connect_sample