RedAndCosmoteer Not hard. However, the problem is there's only one layer available which allows coloring turrets. My turrets are spread over all 3+1 roof layers for various reasons (overlaping; compostions;anmation etc.), that's why not all can be colored. This system allows me to create infinite variations and number of turret designs without increasing memory usage.
The fusion reactors supply power when they are stand alone. When build to form impulse drives then they will only power the impulse drives exclusively. However, you can force them to give power by using plasma nodes to pump power to e.g. a supply corridor.