import std.experimental.color;
enum RGB8 TheColor = RGB8(78, 82, 11);
MyTestImage!RGB8 test = new MyTestImage!RGB8(2, 2);
test.fillOn(TheColor);
assert(test[0, 0] == TheColor);
assert(test[0, 1] == TheColor);
assert(test[1, 0] == TheColor);
assert(test[1, 1] == TheColor);