This grower is fairly sure of this plant identification.
Origanum vulgare ‘Aureum’ (Oregano). A woody-based perennial producing a mat of fragrant, gold-yellow leaves when young, becoming pale yellow in mid summer. In early summer, tiny purple flowers sometimes appear.
They will prefer full sun with a moderately fertile, well-drained soil. Make sure you trim the excess growth regularly.
Culinary, border, edging, ground cover, herb garden, colour
Italics = data drawn from parent genus or speciesView Full Plant Finder Record