[CLN] Refactor color management to improve initialization

Removed redundant `ColorGenerator` attribute from `StructuralFrame` and streamlined color initialization using default `Field` values. Updated tests accordingly to reflect these changes.

Author: Leguark

gempy/core/color_generator.py

@@ -3,18 +3,16 @@
 from typing import Optional
 
 import numpy as np
+from pydantic import Field
 
 
 @dataclass
 class ColorsGenerator:
     """
     Object that handles the color management.
     """
-    hex_colors: list[str]
-    _index: int = 0
-    
-    def __init__(self):
-        self._gempy_default_colors = [
+
+    _gempy_default_colors = [
             '#015482', '#9f0052', '#ffbe00', '#728f02', '#443988',
             '#ff3f20', '#5DA629', '#b271d0', '#72e54a', '#583bd1',
             '#d0e63d', '#b949e2', '#95ce4b', '#6d2b9f', '#60eb91',
@@ -29,10 +27,16 @@ def __init__(self):
             '#945624', '#517c91', '#de8a68', '#3c4b64', '#9d8a4d',
             '#825f7e', '#2c3821', '#ddadaa', '#5e3524', '#a3a68e',
             '#a2706b', '#686d56'
-        ]  # source: https://medialab.github.io/iwanthue/
-        
-        self.regenerate_color_palette()
+    ]  # source: https://medialab.github.io/iwanthue/
 
+    hex_colors: list[str] = Field(
+        default=_gempy_default_colors,
+        exclude=True
+    )
+    _index: int = 0
+
+    def __init__(self):
+        self.regenerate_color_palette()
 
     @staticmethod
     def _random_hexcolor() -> str:
@@ -50,19 +54,18 @@ def regenerate_color_palette(self, seaborn_palettes: Optional[list[str]] = None)
             hex_colors = []
             for palette in seaborn_palettes:  # for each palette
                 hex_colors += sns.color_palette(palette).as_hex()  # get all colors in palette and add to list
-                
+
         elif seaborn_palettes and not seaborn_installed:
             raise ImportError("Seaborn is not installed. Please install it to use color palettes.")
         else:
             hex_colors = list(self._gempy_default_colors)
 
         self.hex_colors = hex_colors
 
-
     def __iter__(self) -> 'ColorsGenerator':
         """Returns the object itself as an iterator."""
         return self
-    
+
     def __next__(self) -> str:
         """Generator that yields the next color."""
         color = self.up_next()

gempy/core/data/structural_frame.py

@@ -32,7 +32,6 @@ class StructuralFrame:
     """
 
     structural_groups: list[StructuralGroup]
-    color_generator: ColorsGenerator
     # ? Should I create some sort of structural options class? For example, the masking descriptor and faults relations pointer
     is_dirty: bool = True
 

test/test_modules/test_serialize_model.test_generate_horizontal_stratigraphic_model.verify/Horizontal Stratigraphic Model serialization.approved.txt

@@ -63,78 +63,6 @@
                 "solution": null
             }
         ],
-        "color_generator": {
-            "hex_colors": [
-                "#015482",
-                "#9f0052",
-                "#ffbe00",
-                "#728f02",
-                "#443988",
-                "#ff3f20",
-                "#5DA629",
-                "#b271d0",
-                "#72e54a",
-                "#583bd1",
-                "#d0e63d",
-                "#b949e2",
-                "#95ce4b",
-                "#6d2b9f",
-                "#60eb91",
-                "#d746be",
-                "#52a22e",
-                "#5e63d8",
-                "#e5c339",
-                "#371970",
-                "#d3dc76",
-                "#4d478e",
-                "#43b665",
-                "#d14897",
-                "#59e5b8",
-                "#e5421d",
-                "#62dedb",
-                "#df344e",
-                "#9ce4a9",
-                "#d94077",
-                "#99c573",
-                "#842f74",
-                "#578131",
-                "#708de7",
-                "#df872f",
-                "#5a73b1",
-                "#ab912b",
-                "#321f4d",
-                "#e4bd7c",
-                "#142932",
-                "#cd4f30",
-                "#69aedd",
-                "#892a23",
-                "#aad6de",
-                "#5c1a34",
-                "#cfddb4",
-                "#381d29",
-                "#5da37c",
-                "#d8676e",
-                "#52a2a3",
-                "#9b405c",
-                "#346542",
-                "#de91c9",
-                "#555719",
-                "#bbaed6",
-                "#945624",
-                "#517c91",
-                "#de8a68",
-                "#3c4b64",
-                "#9d8a4d",
-                "#825f7e",
-                "#2c3821",
-                "#ddadaa",
-                "#5e3524",
-                "#a3a68e",
-                "#a2706b",
-                "#686d56"
-            ],
-            "_index": 2
-        },
         "is_dirty": true,
         "basement_color": "#ffbe00",
         "binary_meta_data": {