Painting a car yourself or contacting a specialized service always begins with one critically important step - selecting the ideal shade. A mistake at this stage can negate all further work, turning the body into a patchwork quilt with color transitions visible even to the naked eye. Modern paint and varnish coatings (paint and varnish coatings) are the most complex chemical compounds, where even a minimal deviation in the proportions of pigments or application technology changes the final result.
You not only have to figure out what type of enamel was used at the factory, but also take into account the natural fading of the body over years of use. Sun rays, road reagents and mechanical micro-impacts create a unique “patina” that cannot be reproduced simply by mixing components according to the factory formula. This is why the selection process often becomes an art, requiring a combination of precise measurements and visual assessment by a master colorist.
Before you go for a can of paint or order a computer tinting service, you need to conduct thorough preparation and diagnose the current condition of the coating. Ignoring nuances such as the grain size of the metallic or the number of base coats will cause the freshly painted part to stand out from the crowd. Let's take a step-by-step look at how to find the right shade and not make a mistake with the choice of materials.
Finding the factory color code and decoding it
The first and most reliable step is to search factory paint code, which is assigned to each vehicle during production. This code is not just a set of letters and numbers, but an exact link to the recipe developed by the paintwork manufacturer for a specific model and year of manufacture. You can find it on special plates located in various places of the body: in the driver's door opening, under the hood, in the trunk or even in the spare wheel well, depending on the brand. Toyota, BMW or VAG.
However, you should not rely solely on the color code, since over the years of production of one model the plant could change the paint supplier or slightly change the shade. For example, white color Super White in different years of manufacture it may have a barely noticeable cream or bluish tint. Therefore, the code serves only as a starting point for the colorist, and not as an absolute truth that guarantees 100% match to the tone of the old, faded body.
It is also important to understand the difference between the exterior color code and the color code for interior elements or plastic parts. They may vary and using bumper paint on a fender repair will result in a visible difference in tone. Always double-check catalog information using Vehicle VIN code, which contains the complete history of the vehicle configuration.
If the plate with the code is lost or severely damaged by corrosion, you can use specialized online services for VIN decoding. Enter the body number in the search field and the system will return the original specification. However, even in this case, visual testing of the paint (sample paint) on the car body before starting work remains a mandatory procedure to guarantee quality.
Types of automotive enamels and their features
The modern market offers many types of paints and varnishes, and the choice between them depends not only on the desire to save money, but also on the requirements for durability and appearance. The main division occurs into one-component and two-component compositions, as well as into types of pigmentation: solid, metallic, pearl and xeral. Understanding these differences will help you choose the right restoration materials.
One-component paints (1K) dry due to the evaporation of the solvent and do not require the addition of a hardener. They are often used for local repairs or painting of wheels, but are inferior in durability to their two-component counterparts. Two-component paints (2K) react chemically with the hardener, forming a durable polymer film that is resistant to scratches and chemicals.
- 🎨 Acrylic enamels (Solid) — do not contain metallic particles, give a deep, uniform color, are easier to apply and polish, but can fade faster than metallics.
- ✨ Metallic — contains aluminum powder, which creates a glowing effect and requires mandatory varnishing; it is difficult to paint due to the risk of “apple-coloring”.
- 🌈 Pearl — the composition uses mica particles coated with metal oxide, which gives an iridescent effect from different viewing angles and requires the highest skill of the painter.
⚠️ Warning: Never attempt to coat a one-component paint with a two-component varnish without first checking for compatibility - this may result in the coating wrinkling and peeling after a few weeks.
Coverings such as Xirallic or Chameleon, where the size and shape of pigment particles are strictly regulated. When selecting such colors, it is critical to use original pigments, since cheap analogues give a flat, “dirty” color without a characteristic deep shimmer. Choosing the right type of base determines not only aesthetics, but also the technology for subsequent drying and polishing.
Computer tinting versus ready-made aerosols
When the color code is found, the owner is faced with a choice: buy a ready-made can or aerosol with color markings or contact a laboratory for computer tinting. Ready-made solutions seem attractive due to their low price and availability, but they almost never match the actual color of the car, especially if it is more than 3-5 years old. Factory paint changes its properties over time under the influence of ultraviolet radiation.
Computer tinting is the process of mixing base pigments using a special program that takes into account thousands of nuances. The colorist weighs the components on high-precision scales, creating an individual shade specifically for your car. This allows you to cover the difference in color and make the transition between old and new paint unnoticeable even with side lighting.
| Comparison parameter | Finished paint (aerosol/can) | Computer tinting |
|---|---|---|
| Shade Accuracy | Only matches on a new car | Adjusted to match faded bodywork |
| Cost | Low | Higher (depending on volume and complexity) |
| Component quality | Often budget solvents | Professional lines (Mobihel, PPG, Duxone) |
| Possibility of correction | Missing | You can add pigment when trying on |
In addition, ready-made aerosols often use cheap solvents, which can take a long time to dry and produce streaks or dullness. Professional paint, selected in the laboratory, contains high-quality thinners that ensure proper spreading and the formation of an “orange peel”, which can then be easily removed by polishing.
Why is the paint in a can always different?
In aerosol cans, gas pressure drops with use, which changes the spray pattern and the amount of solvent reaching the surface. This leads to changes in the shade and structure of the metal in different areas of painting.
Accounting for burnout and color selection technology
The most common mistake is blindly following the formula obtained from the color code. A red car becomes orange after three years of use, a black car fades to gray, and a white car turns yellow. If you apply the new paint exactly according to the factory recipe, it will be brighter and richer, creating a “patch” effect on the body.
A professional approach involves creating test colors (castings). The colorist applies the selected paint to a metal plate, dries it, varnishes it and compares it with the car body in different lighting: in the sun, in the shade and under the artificial light of the workshop. This is the only way to see how the pigment behaves.
- 🔍 Visual assessment - comparison from different viewing angles to identify differences in metallic grain.
- 💡 Spectral analysis - use of a spectrophotometer to accurately measure the wavelength of reflected light (used in expensive laboratories).
- 🧪 Formula adjustment - adding micro-doses of pigments (for example, yellow or purple) to neutralize fading.
⚠️ Attention: Never judge the color match on wet paint - after the varnish dries and polymerizes, the shade always changes, becoming darker or more saturated.
The selection process can take from 30 minutes to several hours if the color is complex (for example, three-layer mother-of-pearl). It is important to give the master time to experiment, since the price of a mistake is a complete repainting of the part. Sometimes it takes 5-10 mixing iterations to achieve a perfect match to the tone of the old coating.
Necessary tools and materials for mixing
If you plan to do the selection and painting yourself or want to control the process in a service center, you will need a basic set of tools. The quality of mixing directly affects the final result: a poorly mixed base will give stripes and different colors even if the color is perfectly matched.
To work, you need precise electronic scales with 0.1 gram increments, graduated measuring cups, stirring sticks and funnels. It is also important to have a clean, grease-free area, as dust that gets into the paint can will ruin the entire job. Don’t forget about personal protective equipment: respirators with carbon filters are required when working with solvents.
☑️ Paint mixing kit
Pay special attention to solvents. They are selected depending on the ambient temperature and the size of the surface to be painted. For large areas and hot weather, use “slow” solvents so that the paint has time to spread before drying. For minor repairs and cold weather - “fast”.
Use only original solvents of the same brand as the paint. Mixing products from different brands (for example, Mobihel base and Vika solvent) may cause the composition to coagulate or change the drying time.
Finish coating: choice of varnish and application technology
After successfully selecting and applying the base enamel, the varnishing stage begins, which protects the color and adds depth. Varnish (clear coat) comes in different hardness (HS - high solid, MS - medium solid) and gloss. For modern cars, the standard is two-component HS varnish, which gives a thick, rich layer and is easy to polish.
It is important to choose the right varnish hardener. Fast hardener is used at low temperatures or to speed up the process, but it leaves less time for spreading, which can lead to shagreen. The slow hardener is ideal for heat and large surfaces, providing a smooth "mirror" finish.
Application technology also affects the final color. A coat of varnish that is too wet can make a dark color (black, blue) visually darker, while a dry, underapplied varnish can make it lighter and more matte. Therefore The first layer of varnish is always applied with a thin “spray”, to avoid undermining the base, and subsequent ones - more generously to form a gloss.
The quality of the varnish and the correctness of its application determine 50% of the visual perception of color. Cheap varnish will become cloudy or yellow over time, ruining even a perfectly chosen base.
Frequently asked questions (FAQ)
Is it possible to select paint only by VIN code without the participation of a colorist?
Theoretically, you can find out the factory code, but it is impossible to guarantee that it will match the tone of a burnt-out car. The VIN provides only a basic formula, which does not take into account the degree of fading of your specific body over the years of use.
Why is the paint in the can different from the color on the car after application?
This is influenced by many factors: layer thickness, pressure in the spray gun, temperature in the chamber, type of solvent and number of layers. Even perfectly selected paint can look different if the application technology is violated.
How long does the selected paint need to sit before use?
After computer mixing, it is recommended to mix the paint thoroughly and let it stand for 10-15 minutes to allow air bubbles to escape. However, it is not recommended to store the finished mixture (base) for a long time, as the pigments may begin to separate.
Does the color of the primer affect the final shade of the paint?
Yes, especially for translucent colors (pearl, some metallics) and single-layer enamels. On a light ground the color will appear brighter and lighter, on a dark ground it will appear deeper and more saturated. It is recommended to use an enamel primer or a matching base coat.