I change in .moprc to:

"Colors": {
"Gain": "lightgreen",
"Loss": "red",
"Tag": "yellow",
"Header": "cyan",
"Time": "magenta",
"Default": "white",
"RowShading": "gray"
}

But always return to original when close

"Colors": {
"Gain": "green",
"Loss": "red",
"Tag": "yellow",
"Header": "blue",
"Time": "white",
"Default": "lightgray",
"RowShading": "black"
},