fix: _chunked_kwargs not expanding kwargs if they're tuples even if t… (

#448)

* fix: _chunked_kwargs not expanding kwargs if they're tuples even if the tuple isn't a valid mpl color

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---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

src/mplhep/plot.py

@@ -305,8 +305,11 @@ def iterable_not_string(arg):
     for kwarg in kwargs:
         # Check if iterable
         if iterable_not_string(kwargs[kwarg]):
-            # Check if tuple (can be used for colors)
-            if isinstance(kwargs[kwarg], tuple):
+            # Check if tuple of floats or ints (can be used for colors)
+            all_entries_numerical = all(
+                isinstance(x, int) or isinstance(x, float) for x in kwargs[kwarg]
+            )
+            if isinstance(kwargs[kwarg], tuple) and all_entries_numerical:
                 for i in range(len(_chunked_kwargs)):
                     _chunked_kwargs[i][kwarg] = kwargs[kwarg]
             else: