Creating visually distinct and contextually meaningful molecular models can often be a challenge for molecular modelers, especially when working on complex structural data. How do you emphasize particular attributes of your molecules for research or presentations while keeping the visualization clean and intuitive? This is where SAMSON’s color schemes come in, offering an elegant and efficient way to elevate the clarity of your molecular representations.
What Are Color Schemes in SAMSON?
Color schemes in SAMSON empower you to customize the appearance of your molecular models. Whether you’re working with atoms, residues, chains, or entire structural models, these predefined schemes allow you to highlight specific molecular features based on properties such as:
- Residue type or index
- Atom types (e.g., elements using the CPK color scheme)
- Hydrophobicity
- Partial charges, temperature factors, and more
Each color scheme applies colors systematically, providing a clear way to represent molecular properties. For example, you can color residues by hydrophobicity to highlight interactions in protein structures or emphasize structural models by setting unique colors per chain or node.
Applying a Color Scheme: Easier Than You Think
Applying a color scheme to your molecular model is straightforward in SAMSON. Here’s a quick example to help you get started:
- Open or import a molecular structure, such as a protein fetched from RCSB PDB using Home > Fetch.
- Select the structural model in the Document View.
- Navigate to the Visualization > Color menu or use the Context Toolbar to choose a color scheme.
To apply a custom color scheme based on residue hydrophobicity, for instance, you’d go to Visualization > Color > Per Attribute > Residue Hydrophobicity. As you make this selection, SAMSON assigns colors to residues according to their hydrophobicity, giving you insight into molecular behavior at a glance.

Customizing Color Palettes
Each color scheme comes with a default palette, but SAMSON gives you the flexibility to edit palettes to suit your needs. With a variety of palette types in the Hue-Chroma-Luminance (HCL) color space, you can control factors like color brightness and contrast for optimal results. Explore options like qualitative and diverging palettes to tailor your visuals further.
You can even test palettes in real-time using the Auto Update option in the color palette window. For those with accessibility requirements, the built-in Color Vision Deficiency Emulator ensures that your visuals remain effective for all audiences.

Why Use SAMSON for Coloring and Visualizing Molecular Models?
SAMSON’s intuitive tools reduce the time and effort needed to generate professional, publication-ready molecular visualizations, helping you focus on your research rather than struggling with technology. With just a few clicks, you can represent molecular properties in visually comprehensive ways, enhancing both your understanding and presentation of the data.
Want to dive even deeper into the details? Check out the official SAMSON documentation page on colorizing here: https://documentation.samson-connect.net/users/latest/colorizing/.
Note: SAMSON and all SAMSON Extensions are free for non-commercial use. Get SAMSON today at https://www.samson-connect.net.
