pencolor 255,0,0 sets the color of the pen to red. 255,0,0 is a RGB-combination where only the red value is set to 255 (fully on) while the others (green and blue) are set to 0 (fully off). This results in a bright shade of red.
pencolor 255, 0, 0 määrab pliiatsi värviks punase. 255, 0, 0 on RGB värvikood, kus ainult punase väärtus on maksimaalne 255, teistel (rohelisel ja sinisel) aga 0, mis annab kokku erepunase.