I have a fiori application with customized theme and some background image given in the page as well as one of the form through CSS in index.html.
When i view the app in mobile and desktop , the texture of some colors/images are shown a bit differently. For eg. in Mobile it shows with original color texture but in desktop the background color applied to FORM appears very light , the header color of title of splitapp is plain white in desktop but in mobile its filled as per brand color, the background image of master list in master app of splitapp is showing in mobile but in desktop it looks to be almost plain white .
For eg, in the below screenshots , you can see the background of title "Item Details" along with logo is brown color which is brand color as per custom theme. But in desktop , the same background is white.
