Dashboard - Data representation

This time I am dropping a data representation shot for the dashboard UI kit I am currently working on. Data visualisation is an important part of Designer's live, because in order to be effective it needs to:
- be accessible (comply to WCAG)
- clearly convey the message
- Be designed with harmony and pattern (Gestalt principles might be of help here!)

Can you tell which element might require some brightness /hue tweaking?

Stay tuned, more is coming!