Unlike any other tomato in appearance, 'Green Zebra' does indeed have dark green stripes against a bright green skin that takes on a slight amber blush when ripe. Growers' tip: give this variety plenty of sun for best flavor and yield, so in the Pacific NW, consider planting 'Green Zebra' where it will get reflected heat and keep it protected from cool night temperatures by using walls of water or wrapping plastic around supporting cages.
Plant the starts deep, leaving only two sets of leaves above ground, even if it means stripping off bottom leaves on a particularly leggy start, or actually laying it at an angle with just two sets of leaves above ground. All the little hairs along the stem will become roots, providing that much more water and nourishment to the plant. You'll also want to install your support, be it a cage, trellis, or some other structure, at the time of transplanting so the roots aren't damaged later on.
Water tomatoes deeply and only when the soil is dry to encourage flower and fruit production. One trick to getting water down to the roots and not on the leaves is to cut the bottom off a 16-oz. to liter-size plastic bottle, throw away the cap, then partially bury the cap end of the bottle into the ground close to the tomato start. Angle it slightly so you can water into the bottle.