Is it makrooh to wear complete black dress in Moharram and in regular days (non-moharram days)?

In regular days it is Makrouh to wear black, especially while praying. There are exceptions, such as the turban, cloak and shoes. They can be black.

But in Muharram, since it’s an expression of sorrow for Imam Hussain (a), then it falls under the label “glorifying Allah’s symbols.” Hence, it becomes Mustahab