Cloudy days get red leaves
Rainy days get blue leaves
Sunny days get yellow leaves
Snowy days get white leaves
Foggy days get green leaves
Whatever it is when we get up is what we put. Some days, we have three or four weather types, but still, it's what the sky is when the sun comes up.
We're in Oregon. It's January. Surprisingly, our January branch isn't covered in blue leaves. This is proof to my mom who is convinced there's nothing but rain here. See? There's FOUR yellow leaves!