OCIO in digital matte painting: colors are different from original

[LorenzoFBF]

I am trying to figure out my error.

I create a new OpenColor 32bit file and I place in it a sRGB 8bit image (left in the figure).

I create an 'OpenColorIO Transform' adj layer in clipping mask and I set it as shown in figure (Input: texture_paint sRGB texture; output: aces interchange ACES2065-1). 

(aces2065 is the color profile of the EXR frames I usually use as backgrounds). 

Right: the same image, opened in PS. The colors are different from the original. Darker and with more contrast. Working Space is set to sRGB.

I tried all the profiles you can find in the Input menu. 

I'd like to have your opinions. Ask me for other details.

cheers 

Lorenzo