Skull t-shirt design

Require a t-shirt design - same design must work on both white and black t-shirt. Skull wearing a bandanna. Needs to have a snake in the design also. Will be screen printed, so please keep the number of colours used in the design as low as possible. Obviously, the more colours sued, the more screens I will use and the higher cost of printing. Dark, grungy, rugged design and colours. Mostly dark colours and grey, silver, white, etc. The bandanna needs to have some red in it - but that should be the only bright colour in the design. Snake should be mostly grey. I have added two pics - one shows a skull with a banadanna - this is how the bandanna should be worn on the skull. The other shows a really rough and rugged skull - this is kind of what I'm looking for with the skull - rough, beaten up skull.