onRgb method
Format this string with ANSI setting it's background color the value defined as RGB parameters.
r
/g
/b
parameters can be an int in the range of 0
to 255
.
Implementation
String onRgb({int r = 255, int g = 255, int b = 255}) {
return format('48;5;${rgbToAnsiCode(r, g, b)}', 0)(this);
}