custom color property in panel draw layout I have my panel with draw definition. And want define color for BGL in panel.
I know that Color class exists in blender, but how to use it? How to create custom color property for my panel?
The graphical representation is determined by the subtype field which is set in this example to 'COLOR'.

from bpy.props import FloatVectorProperty
...

object_color = FloatVectorProperty(  
   name="object_color",
   subtype='COLOR',
   default=(1.0, 1.0, 1.0),
   min=0.0, max=1.0,
   description="color picker"
   )



Documentation on custom properties,
Nice tutorial on addons