Based on the illustrations of this study, I drew a texture map of TOI-3884 (11 d period). Its polar dark spot was explored thanks to the transiting planet. Texture contrast (after Gaussian blurring) aligns with the spot contrast described in [DOI 10.48550/arXiv.2506.11998].
[6/9]

Giant planets orbiting red dwarfs are uncommon, as are hot Neptunes ("Neptunian desert"), as are exoplanets in polar orbits. On this painting, the host star "observes" its strange planet through a massive polar dark spot.

[1/9] of the "art research" thread on TOI-3884 and "red" dwarfs in general.

Meanwhile, Bolin et al. 2025 (arxiv.org/abs/2507.05252) obtained much more blue results:

Seligman et al. 2025: arxiv.org/abs/2507.02757
Opitom et al. 2025: arxiv.org/abs/2507.05226
Spectral reconstruction and extrapolation with TrueColorTools:

Reflectance colors of 3I/ATLAS in sRGB color space with illuminant E (assuming 0.5 albedo, it's very likely lower)

Voyager 1, WAC. March 4, 1979. Photos in violet, blue, and orange filters were aligned, reconstructed into a spectral cube, and convolved in sRGB color space with Illuminant E. There are gamma-corrected and contrast-enhanced options. Done with my program github.com/Askaniy/TrueColorTools

Artistic representation of Epsilon Eridani b, also known as AEgir [sic]

Emsenhuber et al. 2024 (DOI 10.3847/PSJ/ad2178) obtained a population of collision outcomes (2 bodies with m<10⁻² M⊕) that form a contact binary. Structure is maintained by material strength and spin. The painted peanut is Pluto-sized in length, but the size of Mars is theoretically achievable.

An attempt to (relatively) realistically paint a hot Jupiter with a quasi-closed type of atmosphere, according to Bisikalo et al. 2021. (ui.adsabs.harvard.edu/abs/2021PhyU...)

The spherical albedo mode (average reflectivity across viewing angles) eliminates the opposition effect and more accurately represents relative brightness:

I'm developing an open source program with GUI that stores a variety of space photometry and converts them to color, TrueColorTools.
It can also process images and generate color charts. Here's the latest table of some featured objects (geometric albedo mode, sRGB color space, Illuminant E)