Basil may like to be put outdoors in bright sunlight. Green splotches may be normal or could be insect problems like spider mites which are very tiny. Depending on the seed starting soil and its health, you may have some diseases that are showing up. If the days are warm, place the plants outdoors for a few hours per day. Plant lights are only a substitute for getting very young tender plants started and should not be considered when you actaully want to grow and harvest this herb. Seed starting soil should always be sterile and offer good water retention as well as good drainage. It should also be light and not compact down so the roots can grow. Avoid spraying leaves of plants when growing indoors under plant lights, especaily if its the first few sets of leaves.