Having coloured slide labels is a useful feature because it helps to distinguish between verses, choruses etc. in a live situation. However, there appears to be no way of applying a preferred colour scheme globally to all songs, even via a template. So if, for example, you transfer a song library from another application you have to set slide label colours up individually for each song, which is a huge waste of time. I’m sure most users would prefer to use the same colour scheme for all songs, so a global setting would seem to make more sense anyway.