Warm white lights have a more yellow/golden tint to them than the ice white lights which have a colder white appearance. For Christmas trees with a red/gold colour scheme we would recommend to use the warm white lights as for trees using a silver colour scheme we more advise to use the ice whites.
The most obvious choice for outdoor lights would be either solar powered, or battery operated lights. However most of our lights can to be used outside, providing you keep the power source safely indoors.
This is another benefit of using LED lights, unlike fairy lights, if one one bulb goes out the rest of your bulbs are still safe and will stay illuminated.
Yes, all of our lights feature many settings including flash and static modes (except interconnectable lights).