SAS supports several color naming conventions.
If you want one that is human understandable use
Color Naming System which uses these keywords
Lightness
Saturation
Hue
Black
Gray
Blue
Very Dark
Grayish
Purple
Dark
Moderate
Red
Medium
Strong
Orange/Brown
Light
Vivid
Yellow
Very Light
Green
White
You combine the keywords (except BLACK and WHITE, regardless of modifiers you get the same color)
You can write color names in the following ways:
without space separators between words
with an underscore to separate words
with a space to separate words, enclosed in quotation marks
For example, all the following are valid color specifications:
verylightmoderatepurplishblue
very_light_moderate_purplish_blue
"very light moderate purplish blue"
Notice the use of "ish" with one hue value to modify another. Some won't make a lot of sense like "bluish_blue" but are not syntactically incorrect.
Experiment and have fun.
Or learn the CMYK, RGB, HSV, HLS and similar numeric codes. If you don't use these often when you see something like "cx123123" you may not remember what that means.
There are also the "standard" color names. You should be able to get a list of them running this code:
proc registry list
startat="COLORNAMES";
run;
The log will show the color name followed by hex code values for the colors using RGB coding.
You can modify the registry list to include your list of names but unless you have an overriding need to use "BillsFavBlue" it may be more work to keep track of the code for when an update is needed than is worth it.
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