cargo run -- init 11 11  
cargo run -- rect  0  0 10 10 red
cargo run -- rect  1  1  9  9 green
cargo run -- rect  2  2  8  8 blue
cargo run -- rect  3  3  7  7 red
cargo run -- rect  4  4  6  6 green
cargo run -- rect  5  5  5  5 blue
cargo run -- text  5  5  hello
cargo run -- show