The question is don't trust your eyes.
Is it a shape or check your inspector is it an Object Placeholder for an image or IS IT A MASKED SHAPE WITH AN IMAGE? That should tell you. Ta.You can change the colour of shapes as normal. Masked shapes you cannot.
EVEN more Obvious
Close your colour inspector
select your shape again then select your inspector if it is greyed out it is a masked shape/object/image placeholder
Message was edited by: sabatica