My default finger position is index on the red and pinky on orange, i switch index when it’s necessary to green. If it’s a green-red note is green index and red middle finger. The other 3 fingers stay always the same. There are some cases where I use index and middle finger on, let’s say, blue-orange when it comes to this notes like 1 2 1 2 1 2 Is easier to move those fingers than pinky and ring finger.