Could you please clarify what 'stages' you are referring to? Please specify if you are using any frameworks as well. Any screenshots you can provide of actual vs. desired behavior may be helpful as well.
I think you want to change the stages section in the Case processing view. To change this position, open pyCaseMainInner section, make a save as to your current application ruleset and move the Display Stages section to the top which will change the position of that Stages
If you want to change the colors and styling, you might need to add some custom css for this stages in the application.