I have noticed that Low pressure is indicated with areas of Blue, and High pressure with Red. This is opposite to how forecasts are present in the US. (Is Windy using an international standard, perhaps?) I feel that Red for Low makes more sense, as Low pressure is associated with relatively warm air rising, while Blue for High makes sense because it's associated with cooler air descending.
Does anyone else agree? (P.S. - Absolutely love Windy.com!)