Buy black tyres - they grip better and the compounds will last longer. Some part of the colouring process degrades the quality of the rubber from it's maximum. Conti being German and precise; will not award it's coveted "black Chili" label to any of its coloured compounds.
Buy GP4000 s - 's' for black chilli: For the types of riding Bastardi's do this is one of the best tyre's out their. These tyres are a measure of puncture resistance over rolling resistance and are good enough to race on yet reliable enough to ride all year. These tyres grip like no man's business.
Don't buy gatorskins - except for a commuter bike. These are as puncture resistant as hell and can be ridden on the canvas but the grip level is a serious compromise.