Hi mistercrokes,
When you say the image has no color, are you meaning it is black or invisible?
Something that could be affecting the color of your image is the ‘Color and Opacity’ of the Button. This is a color multiplier that affects ALL children/sub-children of the button, but not the button itself.
If that isn’t set to the default (1,1,1,1), it will have an effect on any child that has a visual.
Other than that you would have to broadly check for any places where you programmatically are setting color, and ensure it isn’t interfering with your images color.
Hope this helps