@MikeH
Hi Mike,
The exact name of the colored pencils I use is "SV Classic Colour" from Faber-Castell.
The pencils cost a maximum 1- 1.50 euros each.
In most cases, the four colors No.: 380 (walnut brown), No.: 399 (black), No.: 383 (light brown) and No.: 314 (orange) are enough for me to paint the propellers.
It is important that the surface MUST be primed matt, otherwise the colors will not adhere.
Servus
Bertl