In the Romantic age, those who prefer the "authentic" world of the outdoors are usually seen as the more sincere and passionate in their emotions, and in this sense, Darcy's preference for being in his garden at Pemberley or otherwise on the grounds of the estate shows him as a Romantic hero. The very fact that Elizabeth is impressed by the beauty of Pemberley's gardens, hills, forests, fields, valleys, streams and pastures, which show Darcy's commitment to appreciating the beauty of nature, further underlines the point. Like all of Jane Austen heroes, Darcy wore the standard dress of a Regency gentleman, described as a darkly coloured, double-collared coat over a waistcoat together with breeches and riding boots in the day and a darkly coloured tailcoat, light breeches or dark trousers in the evening. In the 18th century, it was normal for spouses to address each other by their surnames, and Elizabeth Bennet's parents, for example, address each other as Mr. Bennet and Mrs. Bennet despite having been married for 20 years; by contrast after his engagement, Darcy for the first time calls his fiancée Elizabeth, which shows the depth of his love. A sign that this is a marriage based on love can be seen as Darcy is described as having an annual income of 10,000 pounds, and Elizabeth turns down his marriage proposals until she finally decides she loves him.