I don't think the multi-color sets are KBC. As far as I know, KBC's thick PBT are in blue, cream, beige/gray, and dark gray colors (and soon black). I'd ask qtan for details. Material-wise, both would be thick PBT. But profile would be different. 1.5cm height is taller than Cherry profile, which is what the blue caps are. These colorful ones look more like OEM profile to me.