Below are some reason for poor ratings. Selection Limited to 3D Font Art. These are can be created by inexpensive or even free software packages and requires little effort or artistic ability to produce. For a image to blend in, its edges have the same color as the background color it's designed to be placed upon. It is easier to make a image look good on a black background than on a white one.
Edges blend in easier and colors stand out.
Because of this many ClipArt sites make all or most of its images for black backgrounds. But the background sets the whole mood of a webpage. I feel that the Christian faith demands a mood that is illuminating and positive. Black just can't do this.