High contrast mode for project report

We have our management using the dashboard now to track progress on an open items punchlist. They have a look on it in stand ups on the construction site, directly in the system.

The light blue standard color does not have enough contrast to really grasp the number of cases related to the individual bars in the bar graph. A high contrast mode would be helpful, or change the color to maximum contrast for situations with bad light (projector on the construction site).