Hi Robin, please refer to the file in this link below. Basically what we need is to have a class whose main objective is to contain all "constant information" in one centralized place. Color values such as this make a good candidate, so does the value "100" on line 274. For example, you can name it "public static int DefaultZoomFactor = 100;", then use "DefaultZoomFactor" here instead of hard-coding "100" (which will make future editing hard, if we choose to change it to, say, 90).

https://github.com/Benglin/designscript/blob/master/UIs/Studio/DesignScriptStudio.Graph.Core/Configurations.cs