A word on colors

Colors are defined in XLogo with a list of three numbers [r g b] between 0 and 255. The number r is the red component, b the blue and g the green. Xlogo has 16 predefined colours: you can access with their rgb list, with a number, or with a primitive. look at this table:

Number	Primitives	[R G B]	Color
0	black	[0 0 0]
1	red	[255 0 0]
2	green	[0 255 0]
3	yellow	[255 255 0]
4	blue	[0 0 255]
5	magenta	[255 0 255]
6	cyan	[0 255 255]
7	white	[255 255 255]
8	gray	[128 128 128]
9	lightgray	[192 192 192]
10	darkred	[128 0 0]
11	darkgreen	[0 128 0]
12	darkblue	[0 0 128]
13	orange	[255 200 0]
14	pink	[255 175 175]
15	purple	[128 0 255]
16	brown	[153 102 0]

# These three instructions are the same
setsc orange
setsc 13
setsc [255 200 0]