Auto-translated
How do you find the right fragment of the RGB hex code? If the effect is small (for example, eyes), there aren't many lines, and you can find the color code by trial and error. But there are also large effects, like the smoke of a creature, which you used as an example. You could spend all day trying to find it... How do you deal with that?
You open the necessary particle and visually find the RGB values – I personally check the RGB components using Adobe Photoshop... it's tedious, but there's no other way, and besides, the color range of different parts is almost always in a related range!
С уважением, Psatkha (Псатха) 
---------------------------------------------
Неудачное планирование ведёт к неудаче ...
NCF - мод, добавляющий дополнительных существ в HeroesV 3.1

---------------------------------------------
Неудачное планирование ведёт к неудаче ...
NCF - мод, добавляющий дополнительных существ в HeroesV 3.1