Wear white
الْبَسُوا مِنْ ثِيَابِكُمُ الْبَيَاضَ، فَإِنَّهَا مِنْ خَيْرِ ثِيَابِكُمْ
Albasu min thiyabikumu-l-bayad, fa-innaha min khayri thiyabikum.
"Wear white from your clothes, for it is the best of your clothing, and shroud your dead in it."
Narrated by Ibn Abbas. Sunan Abi Dawud 3878, Sunan at-Tirmidhi 994
A short reflection
Recommendation, not commandment. White hides nothing, shows every stain, demands care. A prophetic taste.