What's more annoying than having a really cool figure (official MP-10B) but delivered without its iconical trailer ?
The even more annoying thing was that KO versions were sometimes available with one, black trailer !
Anyway, I bought a spare MP-10 official trailer, and begun customizing it, by removing the Autobot labels and creating Decepticon ones from scratch.
Then, painting was easy : black & purple for the main part, and clear red for the canopy, and it was done !