small fix on color coercion

Author: tomvanmele

CHANGELOG.md

@@ -45,6 +45,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Changed `compas.geometry.curves.nurbs.new_nurbscurve_from_...` to `nurbscurve_from_...`.
 * Changed `compas.geometry.curves.nurbs.NurbsCurve.__new__` to prevent instantiation of `NurbsCurve` directly.
 * Changed `compas_rhino.geometry.curves.new_nurbscurve_from_...` to `nurbscurve_from_...`.
+* Chnaged `compas.colors.Color.coerce` to take color as is, if it is already aninstance of `compas.colors.Color`.
 
 ### Removed
 

src/compas/colors/color.py

@@ -582,6 +582,8 @@ def coerce(color):
         """
         if not color:
             return
+        if isinstance(color, Color):
+            return color
         if Color._is_rgb255(color):
             return Color.from_rgb255(*list(color))
         if Color._is_hex(color):