DMC 3903 to Madeira: Thread Conversion

Madeira 0409 is a close match for DMC 3903 Ultra Dark Terracotta, though notably the same number is also listed for DMC 3857 (Dark Rosewood). This convergence means Madeira doesn't maintain a fully distinct shade for each of these colors at the dark red-brown end of the spectrum. In practice, 0409 works for 3903 in standalone terracotta contexts, but projects using both 3903 and 3857 will have reduced distinction between them if both are sourced from Madeira.