Clear part almost invisible on some surfaces

These are for marking some of my larger portable items; my first idea was for the back of clip boards and note pads. On some black surfaces (monitor casing, inside a rack cabinet), the clear part blends in very well with the supporting item so at a glance my logo appears to be printed directly on the item. My logo is quite colourful and when sticking on a darker item, I prefer these clear labels to the ones I bought with a white border. I'm contemplating getting some clear labels the size of my smaller die cut sheet labels.