The color of synthetic diesel oil is red.
Yellow is the most common color used. If you used any other color be sure and label it Diesel.
the color and diesel is oily.
Diesel fuel can appear different colors due to variations in its composition and any added dyes. Typically, diesel fuel is a light yellow or pale green color. However, impurities, contaminants, or oxidation can darken its color. Additionally, some countries regulate the color of diesel fuel for tax or identification purposes, leading to variations in color.
Yellow
Black
We would describe Mr. Diesel as "flesh-colored."
A diesel generator can be any color you like...orange with pink polka dots would be nice. However, manufacturers are aware that diesel fuel stains things, so they generally paint with a color that doesn't show diesel oil stains too badly.
green
Petrol is typically a light yellow or clear color, while diesel is usually a shade of green or light blue. The color is due to the different additives and dyes used to differentiate between the two types of fuel at petrol stations.
Green
Black & grey