Pro Audio Support

Q:
In Logic, how do I make colored markers in the Arrange window?
 
A:
This can be done on Mac only. There's no way to colour markers on PCs.

From the Options menu, pick Marker > Open Text. In the text window, pick "Object colors" from the "Face" menu. Now hold down the Option key while choosing a color. This will colour the background of the text window, and the same colour will also be used in the Arrange window.