To do a good repair job, it is sometimes necessary to match the colour by tinting, blending in, or polishing the old paintwork.
Therefore, careful comparison between the new paint and the original finish is essential. Any variation in colour must be modified before application. The mixing formula shown on the microfiche can assist in this. You should use only the mixing bases contained in the mixing formula for tinting, or the reduced bases indicated in the tinting guide.
An adequate colour comparison can only be carried out on a sprayed (not handpainted) dry paint film (including the clear coat in the case of metallic finishes) and must be done in daylight, or under a daylight lamp. 22 Line HS 2K topcoat can be compared already after a few minutes drying.
With metallic colours, the sprayout (sample) as well as the actual spraying should be done by the same person.
Due to weathering, age and washing, almost all paint finishes are subject to changes in appearance and colour. This is caused by the absorption of dirt or by external influences (temperature, humidity, UV radiation, acid rain etc.). These effects can in most cases be removed by polishing.
Repairing basecoats is more difficult as the colour and the brightness of the metallic effect strongly depend on the application method used.
1. On the diameter of the spray gun nozzle and the spraying pressure.
With a small nozzle and high spraying pressure, the atomisation is finer. This produces a lighter colour.
2. On the reducer and the spraying viscosity.
With a rather fast reducer, the silver effect achieved is usually more brilliant than that obtained with a rather slow reducer. The higher the viscosity, the coarser the spray pattern, which increases the risk of clouding.
3. On the spraying method.
When you spray rather dry, or apply a dust coat, this makes the colour lighter and more metallic. When you spray rather wet, the colour appears fuller and darker. Within these variants, you find the full range of nuances as regards metallic effect and colour.
4. On the distance of the spray gun from the object to be painted.
A short distance between the spray gun and the object being painted produces a rather wet film and a rather dark and chromatic shade. A wider distance results in a drier film and a lighter and more metallic colour.
Colour alterations
It may happen that OEM colours are slightly altered for technical or styling reasons, without the colour code and/or name being changed. Furthermore, productionrelated colour fluctuations can occur (for example with paints from different production plants or of different quality etc.).
The table below provides an outline of how the mixing formulas of (darker, lighter, bluer, redder etc.) colour variants or (coarser, finer) effect variants are marked.
Mark  Characteristic 
/ 20  coarser 
/ 30  finer 
/ 40  darker 
/50  bluer 
/60  yellower 
/70  greener 
/80  redder 
/90  lighter 
/0A  less chromatic, dirtier 
/0B  purer 
You will also find mixing formulas with combined variant marks such as:
/ 48  darker and redder 
/7B  greener and purer 
/62  yellower and coarser 
Colour Group  more violett  bluer  greener  yellower  more orange  redder 
white  A 131  A 168  A 105  A 172  M 6  
grey  A 127  M 31 M 52 M 63 
M 68 M 96 
M 5
M
43 M 40 M 146 
M 38 M 201 
M 6 
violett  M 31 M 52 
A 346 M 55 

blue  A 127  M 68 M 96 
M 5
M
40 M 43 M 77 M 146 
M 6 M 55 

green  M 52 M 63 
M 5
M
40 M 43 M 77 M 146 
M 201  
yellow  A 131  A 168  A 172 M 201 
M 6  
beige  M 30  A 131  A 168  M 5
M
40 M 43 M 77 M 146 
A 172 M 38 M 201 
M 6 
orange  M 5
M
40 M 43 M 77 M 146 
A 346 M 6 M 326 

bordeaux  A 127 M 30 
M 31  M 5 M 39 M 43 
M 38 M 201 
A 346 M 6 M 326 

red  M 30  A 131  M 5
M
40 M 43 M 77 M 146 
M 38 M 201 
lighter  dirtier 
Please use white bases only  Please use black bases only 
* Please use the bases from the corresponding mixing formula
Colour Group 
more violett  bluer  greener  yellower  more orange  redder  darker  
violett  A 531 A 552 
A 531 A 552 
A 352  A 352 A 353 
A 427 A 430 
A 353 A 430 

silver  A 427  A 353  A 531 A 548 A 552 A 555 
A 531 A 548 A 552 A 555 
A 696  A 640  A 136 A 335 
M 105 M 146 A 335 
A 372  M 201  A 347 A 350 A 352 
M 306 A 347 A 350 A 352 
A 929 A 974 
A 929 A 974 
blue  A 427 A 430 
A 353 A 430 
A 696  A 640  A 136 A 335 
M 105 M 146 A 335 
A 347  M 306 M 347 
A 531 A 548 A 552 A 555 
A 531 A 548 A 552 A 555 

green  A 548 A 522 A 555 
A 548 A 552 A 555 
A 136 A 143 M 177 
M 105 A 143 M 146 M 177 
A 335  M 306 A 335 
A 696  A 640  
yellow  A 696 M 177 
A 640 M 177 
A 372  M 201  A 372  M 306 A 324 
A 136 A 143 
A 143  
orange  A 136 A 143 
M 105 A 143 
A 347 A 350 A 352 
A 324 A 347 A 350 A 352 
A 372  M 201 M 306 

bordeaux  A 696  A 640  A 136 A 143 A 335 
M 105 A 143 A 335 M 146 
A 372  M 201 M 306 
A 347  A 324 A 347 
A 929 A 974 
A 929 A 974 

red  A 430  A 353 A 430 
A 136 A 143 A 335 
M 105 A 143 A 335 
A 350 A 372 
M 201 A 350 
A 347 A 352 
A 347 A 352 
lighter  dirtier  
face view  Please use aluminiums only  Please use black bases only 
side view  Please use white bases only  Please use black bases only 
* Please use the bases from the corresponding mixing formula.
* To be used in solidcolour basecoats only
Colour Group 
more violett  bluer  greener  yellower  more orange  redder  darker  
violett  A 531 A 589 
A 531 A 589 
A 352  A 352 A 359 
A 427 A 430 
A 359 A 430 

silver  A 427  A 359  A 503 A 531 A 563 A 589 
A 503 A 531 A 563 A 589 
A 696  A 640  A 136 A 335 
A 105 A 148 A 329 
A 372  A 201  A 347 A 378 A 352 
A 306 A 347 A 378 A 352 
A 926 A 997 
A 926 A 997 
blue  A 427 A 430 
A 359 A 430 
A 696  A 640  A 136 A 329 
A 105 A 148 A 329 
A 347  A 306 A 347 
A 503 A 531 A 563 A 589 
A 503 A 531 A 563 A 589 

green  A 503 A 563 A 589 
A 503 A 563 A 589 
A 136 A 143 M 115 
A 105 A 143 A 148 A 115 
A 329  A 306 A 329 
A 696  A 640  
yellow  A 696 A 115 
A 640 A 115 
A 372  A 201  A 372  A 306 A 323 
A 136 A 143 
A 143  
orange  A 136 A 143 
A 105 A 143 
A 347 A 378 A 352 
A 323 A 347 A 378 A 352 
A 372  A 201 A 306 

bordeaux  A 696  A 640  A 136 A 143 A 329 
A 105 A 143 A 329 A 148 
A 372  A 201 A 306 
A 347  A 323 A 347 
A 926 A 997 
A 926 A 997 

red  A 430  A 359 A 430 
A 136 A 143 A 329 
A 105 A 143 A 329 
A 378 A 372 
A 201 A 378 
A 347 A 352 
A 347 A 352 
lighter  dirtier  
face view  Please use aluminiums only.  Please use black bases only 
side view  Please use white bases only  Please use black bases only 
* Please use the bases from the corresponding mixing formula.