is_valid_color: Test a Character String For Pixiedust Recognized Color Format
Description
pixiedust recognizes colors as dvips names,
rgb(R,G,B), rgba(R,G,B,A), #RRGGBB, or
#RRGGBBAA. This code returns a logical indicating if
the given character strings are valid.
Usage
is_valid_color(color)
is_valid_color_single(color)
Arguments
color
A character vector of color names.
Functional Requirements
Returns a logical vector correctly identifying valid color formats.
Casts an error if color is not a character object.