I am using the “T - Basic Image” mode and am testing it with other images.
Unfortunately I get an error
loading image file: restaurant1.png libpng warning: iCCP: known incorrect sRGB profile
I converted those images from other formats in Photoshop. But appearently Photoshop creates some wrong or outdated color profile. It seems due to that the images no longer can be used in this opaque mode, that can be dialed in with etc.knob4 in the original “T - Basic Image” mode.
With which tool did you create your images?
An example of my file is:
(origin of the picture is https://chuckmanchicagonostalgia.wordpress.com)