Esoteric Software

[Gary]

I've gone into viewport settings, set to standard grey, but the viewport grey is pinkish in colour and quite distracting...screenshot attached....you can see the interface below is showing an standard grey.

[Misaki]

Do you mean by that the viewport background is pinkish gray even though you have set it to the default setting? What version of Spine are you using?

[Erika]

If you have a clipping active, and "others" visibility active, then you will see a color overlaid to delimit the area where the clipping is active.
Clipping attachments - Spine User Guide
Simply disable the visibility of "others" to stop seeing the extra color.
Tools - Spine User Guide: Viewport options