Infographic Designer - Filling in multiple images

[Alan_Teal44]

i am looking to fill in a multi layered image. If i try to use 1 image and fill it in the info graphic changes the non filled area so it is not all the same colour (which i assume beacause the underlying image has different colour shades for each of the layers

So in this example the non filled area the grey colour changes as the base image has different colours originally.

I tried placing each block as a spererate image but cannot get the fill to treat the boxes as one so they all show the same % fill

Does anyone have any solutions