Add version control addition & changeIndicationColors

RainbowDrops.epf includes a version control deletion indicator color, but doesn't include colors for addition and change indicators (at least for Python! I see them in the screenshots?) The default Addition color is grey which makes line numbers impossible to read; I've changed it to dark Green to match additions in git diff. The default Change color is a redish grey. Red often means error, so I've changed it to blue. I changed the delete indicator a more staturated pink color to differentiate it from the red error lines, which is especially useful in the overview ruler.

Default Eclipse Colors
![eclipse-dark-nocolors](https://cloud.githubusercontent.com/assets/195061/4281766/5466c190-3d48-11e4-834a-a4528375defc.png)

Replacement Colors
![eclipse-dark-colors](https://cloud.githubusercontent.com/assets/195061/4281768/57c88cb0-3d48-11e4-9c95-1abfd37f8d4d.png)

I'm sure we can have discussions about exactly what colors to use, but these work well enough and everything is legible.