PNG image colors not correctly displayed

Hi all

I’m now on monogame 3,7, using visual studio for Mac.
For my game I display some PNG images.
On Android, no problem, all is fine !
On IOS, with the SAME FILES, colors are not correctly displayed !
Transparency seems to make shit on IOS…

I already tried to play the “blendstate” but this change nothing…

What’s the solution ?

Pit