Graph: node labels' color defaulting to white instead of black #4500
Description
Description of bug / unexpected behavior
when labels=True, the node labels are white TeX on white nodes-- and therefore invisible.
in the doc example LabeledModifiedGraph also you can see the labels are not visible for white nodes, but only for the red node -- https://docs.manim.community/en/stable/reference/manim.mobject.graph.Graph.html
Expected behavior
Node labels' color should default to black and should be visible
How to reproduce the issue
Code for reproducing the problem
from manim import *
import networkx as nx
class MovingVertices(Scene):
def construct(self):
vertices = [1, 2, 3, 4]
edges = [(1, 2), (2, 3), (3, 4), (1, 3), (1, 4)]
# labels = "1234"
G = nx.Graph(edges)
g = Graph.from_networkx( # same behaviour when using manim's Graph(...)
G,
# labels=True # --> white labels on white node dots
labels={
v: MathTex(v, fill_color=BLACK) for v in vertices # --> white labels -- runs inside manim
# v: MathTex(v, color=BLACK) for v in vertices # --> works -- black labels -- could be a potential fix (`fill_color` --> `color`)
# i: label for i, label in zip(vertices, labels) # --> works -- black labels
}
)
self.play(Create(g))
self.wait()Additional media files
Images/GIFs
Logs
Terminal output
PASTE HERE OR PROVIDE LINK TO https://pastebin.com/ OR SIMILAR
System specifications
System Details
- OS (with version, e.g., Windows 10 v2004 or macOS 10.15 (Catalina)): macOS Tahoe 26.1
- RAM:
- Python version (
python/py/python3 --version): 3.12 - Installed modules (provide output from
pip list):
Package Version
---------------------- -----------
av 13.1.0
beautifulsoup4 4.14.3
click 8.3.1
cloup 3.0.8
Cython 3.2.2
decorator 5.2.1
glcontext 3.0.0
iniconfig 2.3.0
isosurfaces 0.1.2
manim 0.19.1
ManimPango 0.6.1
mapbox_earcut 2.0.0
markdown-it-py 4.0.0
mdurl 0.1.2
moderngl 5.12.0
moderngl-window 3.1.1
networkx 3.7rc0.dev0
numpy 2.3.5
packaging 25.0
pillow 12.0.0
pip 24.0
pluggy 1.6.0
pycairo 1.29.0
pydub 0.25.1
pyglet 2.1.11
pyglm 2.8.3
Pygments 2.19.2
pyobjc-core 12.1
pyobjc-framework-Cocoa 12.1
pytest 9.0.1
pytest-order 1.3.0
rich 14.2.0
scipy 1.16.3
screeninfo 0.8.1
skia-pathops 0.9.0
soupsieve 2.8
srt 3.5.3
svgelements 1.9.6
tqdm 4.67.1
typing_extensions 4.15.0
watchdog 6.0.0
[notice] A new release of pip is available: 24.0 -> 25.3
[notice] To update, run: pip install --upgrade pip
LaTeX details
- LaTeX distribution (e.g. TeX Live 2020): MacTeX-2025 https://www.tug.org/mactex/mactex-download.html
- Installed LaTeX packages: