themes from cydia are not working with iphone 4

[doom_eulogy]

some of the themes from cydia are not working with my iphone 4.
examples of the themes are Batman Slider and Apple Retro Battery.
why is that?
im using 4.3.2

[really.old.iphone]

This is because the iphone4's retina display. all pictures must be made for the display. There is no magic involved, the developers just have to make higher resolution pictures. The devolopers of these themes did not, so they dont do anything on iphone 4. themes that did work, the dev's did make the better pictures