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 in an information technology system; generate a graph of said configuration items that visually depicts topological relationships between said configuration items, said graph comprising a heat map overlay; and assign pixel colors for each configuration item in said heat map overlay according to their severity value.