During June 2025, this developer focused on enhancing data visualization in the mne-tools/mne-python repository by addressing a bug affecting power spectral density (PSD) plots. They improved the visibility of channel traces when spatial_colors was enabled, adjusting RGB intensities to ensure each trace remained distinguishable and readable. Using Python and matplotlib, they applied targeted debugging and color-mapping techniques to resolve visual ambiguity, which previously hindered data interpretation. Their work reinforced the robustness of scientific plotting workflows for neuroscience data, supporting faster and more reliable exploratory analysis. The contribution demonstrated depth in bug fixing, data visualization, and open-source documentation practices.