1. A computer program product for displaying information technology conditions with heat maps, comprising: a tangible computer readable storage medium, said tangible computer readable storage medium comprising computer readable program code embodied therewith, said computer readable program code comprising program instructions that, when executed, causes a processor to: determine a severity value of current issues for each configuration item of a plurality of configuration items of an information technology system, wherein the current issues are associated with a plurality of different issue types; generate a graph of said plurality of said configuration items that visually depicts topological relationships between said plurality of configuration items, said graph comprising a heat map overlay; assign pixel colors for each configuration item in said heat map overlay according to their severity value, wherein a region of said heat map overlay comprises a first pixel color of the pixel colors associated with a relatively higher severity value; display a second pixel color associated with a relatively lower severity value in said heat map overlay; and surround the region with the second pixel color to highlight the first pixel color.