A foreground colour can be built in the UDL from '(' followed by an RGB hexcode (e.g. "(FF0000Hello!" for a bright red Hello!), and a background colour from ')' followed by an RGB hexcode.
Coverage increased (+0.1%) to 98.367% when pulling 7591abf9a9c47d82a28f0f31d24e9c568ad7aca9 on true-colour#284 into 3e9b915aafc60832f93e860038c6b96bfccdf950 on master.
Adds a new colour type: true_colour.
A foreground colour can be built in the UDL from '(' followed by an RGB hexcode (e.g. "(FF0000Hello!" for a bright red Hello!), and a background colour from ')' followed by an RGB hexcode.
Closes #284
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