Elizabeth Sweetheart, 74, is known in her area of Brooklyn as the Green Lady of Carroll Gardens for her evergreen approach to life.

For the past 20 years or so, she has dressed head to toe in a bright lime green, with hair dyed to match.

“I’ve just become green — I can’t wear any other color,” she said on Monday at her townhouse on Nelson Street, where the front door, back door and staircase were painted green to match much of the interior.

The kitchen had a green rug, a green trash can, green utensils, dishes, cutting boards and saucepans. Ms. Sweetheart’s coffee cup, oatmeal carton and vitamin pill case and the sponges in the sink were all green, as were the knobs on the cabinets.