[Coco] CoCo 3 Color Table for Printing. Does it Exist?

[Stephen H. Fischer]

Hi,

Robert Gault wrote:
> Stephen H. Fischer wrote:
>
>> Hi,
>>
>> Recently when I was working on a DECB program for the CoCo 3 RGB to
>> S-Video TV project I wanted to change some colors.
>>
>> I opened the CoCo 3 Extended Basic Manual to the color code table on page
>> 295 and found a list of the numbers from 0 to 63.
>> Not very useful. (Is your manual page the same?)
>
> Yes it is the same. You are supposed to add your own descriptive color
> names as most people see colors slightly differently.

Would it not be much better if a replacement for page 295 contained the CoCo
3 Color Values, Color Swatches, the 24 Bit Color Values and Color Names.

If some one was color challenged they could change the names.

Many of the Names have no alternates, Max. RED, GREEN, BLUE for example.
Also BLACK, WHITE, CYAN, MAGENTA and YELLOW. Yes, many of the other colors
may be hard to assign names.

Should we dismiss any possibility of agreement  consent ants. There is a
possibility that many of the Names will be acceptable to most CoCoers.

Even the Color Challenged may have a use for a set of Standard Color Names
if they are developing a program that others may use.

If the Color swatches and what you see on the screen do not match then it
may be a sign that some adjustments are needed.

I am concerned about the common Color printing problems and there will be
differences between each of the Color printers we have available.

In worse case it might be necessary to order a special commercial printing
for best consistent results.

If you tape a new page into your manual, unless you use permanent glue, it
can be removed.

>>
>> This stopped me and I used another program instead. (Wheel)
>>
>> ---------------------------------------------------------
>>
>> I am looking for a CoCo 3 Color Chart that I can print on my photo
>> printer (Windows of Course).
>>
>> Does this exist?
>
> Not that I know of.
>
>>
>> Or has someone built a table of the CoCo 3 Palette colors to 24 bit
>> Color.
>
> There is an algorithm in MESS based on one of John Kowalski's programs.
> He may be able to supply a conversion chart.

As John's programs and MESS are not intended for printing, that may or may
not be useful.

It is one source of 24 bit Color Numbers that I will look for.

I do not think "eyeballing" is a good technique unless done be many people
as you say most people see colors slightly differently.

If anyone has a set of 24 bit color values for the CoCo Colors please send
them to me.

I will be offering a Beta Test "PDF" to see if this will be useful.

>> Have names been assigned to the 64 CoCo 3 Colors?
>
> Not by any Coco people :)  If you do some research on standard color
> charts as used by the paint industry, you may be able to get some
> standardized names but you will have to eyeball the Coco colors to the
> standard color charts.
>
>>
>> I would include the CoCo Color (0-63), the RGB 24 Bit Color (0-FF, 0-FF,
>> 0-FF)  and the color name on a replacement for page 295 If I built one.
>
> You should be able to make your own chart as the Coco RGB color format
> is very simple. One palette byte is XX XX R1 G1 B1 R0 G0 B0. Since your
> 24 bit color also is to be R G B, the only question will be how to scale
> the intensity from 6 bits to 8 bits. You can certainly do that by eye.

I will be starting by assigning the 24 bit color values by using 3 = 100% ,
2 = 75%, 1 = 25% and 0 = 0%. 50% will be used if CYAN and MAGENTA indicate
that it would be a better starting point.


 Stephen H. Fischer