You are using UiPath StudioX profile so the studio interface is colorful. If you switch to either Uipath Studio or UiPath Studio Pro you will not have colorful interface.
You will be able to switch between these by changing the profile, changing profile is easy
got to Home–>Settings–>License and Profile–> View or Change Profile
a pop up will ask to choose a profile, after profile is chosen Studio will restart
In StudioX you will find below tabs/panels more on StudioX interface
- Error List
- Data Manger
In other profiles you will find additional tabs/panels.
Hope this is helpful