Michel Decoux is not among the most widely recognized names in art history, and there might be some confusion as to his identity. However, considering the dates provided, it's possible to speculate that you are referring to a historical figure who could have been a part of the 19th to early 20th-century art scene. The 19th century was a period of significant transformation in the arts, with movements such as Romanticism, Realism, and Impressionism challenging traditional artistic norms and techniques. An artist like Michel Decoux, if he were indeed active during this time, would have been exposed to a rapidly changing art world, with the advent of industrialization, urbanization, and a growing middle class that had a different set of tastes and interests compared to the aristocracy that previously dominated patronage of the arts.
Without specific details on Michel Decoux's life and works, one can only hypothesize about his contributions or his style. If he were a French artist, as his name might suggest, he might have been influenced by prominent French artists of the time such as Eugène Delacroix, Édouard Manet, or Claude Monet. He might have exhibited his work at the Paris Salon or been involved with the independent exhibitions of the Impressionists. Additionally, the late 19th century saw the rise of new artistic movements such as Post-Impressionism, Symbolism, and Art Nouveau, each of which brought new ideas about color, form, and the purpose of art.
Given that there is no widely recognized artist by the name of Michel Decoux with a comprehensive biographical record, it's important to consider the possibility of a lesser-known or regional artist whose works may have not been extensively documented or have been overshadowed by his contemporaries. The art world of the 19th century was filled with numerous artists whose legacies did not endure as prominently as those of the great masters. Many such artists were prolific and skilled but did not gain significant fame during their lifetimes or have been largely forgotten by history.
If more specific information about Michel Decoux's life and oeuvre were available, a more accurate and detailed biography could be provided, encompassing his artistic education, the nature of his works, his influence on his peers and successive generations, and his standing in the art historical canon. Without such details, any assertions about his life and work remain speculative.