go with either the blue or the red, the black and green would get blocked if someone was to sit on the passenger side or driver side kinda thing, blue seems very ideal. But I would try the red spot also. Me and chad like our tweeters mounted high.
most components dont have an OFF-AXIS switch or mode....im pretty sure yours doesnt have that... if it doesnt have an OFF-AXIS mode... u need to moount the tweeter less than 3 inch from the woffer... check yoru crossover or manual open yoru crossover and it should be some jumpers with off and on axis... if it doesnt have that... for better results u need to go GREEN or BLACK...
i will chose BLACK but more to the left right on top of the woofer