TMSFMXSignatureCapture open image file on Windows

I'm using TMSFMXSignatureCapture  to save the user signature on Android smartphone.
I save in 2 different blob fields, the sig file and a jpg image file of the signature.
The Jpg file saved, is not the same of the signature picture but it seems with color inverted.
Any Idea to get the right image?
I need a real image to print the signature on a rave report!

So far I could not reproduce this here. What Delphi version are you using? What Android version is this?

I'm using Delphi XE7 on Android 4.3

What I meant is shoun here 

Please save the image as a png on Android to have a transparent background.

Kind Regards,