I downloaded a theme and can not figure out the images sizes or placements

I DL a theme Isuzu by themesflat and unlike all of the other templates I’ve DL the image files were just white boxes with no describable location or sizes. All of the other templates I’ve DL had grey box image holders with the recommended image size and the holders had names that let you know where they belong like bg***.jpg, in this theme the image is a whitebox names 1.jpg. If anyone has used this template before can I get a few pointers in the right direction? Thanks in advanced.