First port is always just one colour
Anger in mother, in her back
First realm's emperor decorated stop sign
Back in the water if it's a tree
Rage found in wires
Read without a single colour
The answer is a single word.
I'm guessing the clues will be quite easy for our crossword gurus, so I'm omitting the line numbers and enumerations for now. I'll add them later if this goes unsolved for a while.