Currently the Workflow Status page uses green/yellow/red to denote steps that were completed/in progress/errored, however the shades chosen for these are indistinguishable to some colour-blind people. This means that they cannot tell for instance whether a step is in progress or errored. Also, currently the only indication that a step is "disabled" is its image being shifted to greyscale which is also problematic for others including myself.

Some sort of visual indicator of the step's state beyond RGY and full-colour/greyscale would immensely help to support workflow developers and designers who are colour-blind.