Color schemes vary based on Creo setup but on my setup here is what I see:
Pink (or magenta) dimensions in the drawing means that a created dimension has become disconnected. You can right click on the dimension, edit attachment and reselect the references to re-connect it.
Green dimensions mean the shown dimension has been changed but the model has not been regenerated. Regenerate the model and regen the drawing to see the updated geometry and dimensions.
