Hi Jeremias,
The underside is coal black Humbrol 85 this is a satin colour but will need a gloss coat where the decals go then a clear matt coat, Also use H85 for the fins.
The cameo' upper surface is Humbrol 116 dark green and the brown is Humbrol 29 dark earth, both of these are also matt and will require a gloss coat before any decals are put on, then a clear matt coat over the colours.
Don't use Humbrol 30 matt green its the wrong shade
regards.
ian.
just doing one more model ! thats all.