Commodore Plus 4 - Controlling colors

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CONTROLLING
COLORS
Separate colors can be put into each part of the screen. The border
can be one color, the background a different one, and each character
can have its own color. You already know how to set the character col
ors using the keyboard. The COLOR command adjusts the color of the
other screen areas.
Turn the border of your screen red by typing the command COLOR 4,3 and
pressing the return key. The number 4 in the command stands for
the border area, and color number 3 is red (the same number as on the
key marked RED).
Now type COLOR 0, 7 and hit return . The screen background
turns blue. The number 0 stands for the background, while the 7 is blue
(also the same as the keyboard).
The first number after the word COLOR stands for the area on the
screen you want to change. Area 0 is the background, 1 is the char
acter color, 4 is the border. You'll learn about areas 2 and 3 when you
get into multi-color graphics later in this chapter.
Screen Area Numbers
AREA# AREA NAME
0
1
2
3
4
Background
Character
Multi-color 1
Multi-color 2
Border
Each color also has an adjustable brightness level, called the lumi
nance. You can add a number from 0 (darkest) through 7 (brightest)
after the color number to vary the color. Type COLOR 4 ,3, 0 and hit
RETURN. The border becomes a dark red. Type COLOR 4, 3, 7
and the border changes to a bright red.
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