продуманный ?:

You want a plain blouse to go with that skirt - nothing too elaborate. They're making the most elaborate preparations for the wedding. The congresswoman said she was resigning, but refused to elaborate on her reasons for doing so

She and her boyfriend came up with an elaborate plan to murder her husband. | 2. He came out with such an elaborate excuse that I didn't quite believe him. | 3. I'd prefer a simple classic style - nothing too elaborate.