The colors used today is not prominent enough to differenciate a change, new and delete. When looking at the ruler and overview ruler it is hardly identifiable which is what in the dark theme. A suggestion is to have some thing like following as the color set.
Change : RGB(166,96,168)
New : RGB(57,146,155)
Delete : (132,140,149)
Basically i’m suggesting to use some mid range darker shades that too much lighter shades which will make it easier to differentiate the color change.