The Sanwa OBSC 30mm buttons are the transparent version of the OBSF 30mm of which they include the exterior part and the micro switch. You can backlight the buttons for a better rendering.
The Sanwa OBCS-30 'smoke' button completes the color range of the OBSC-30 series.
However, the product is neither translucent nor tinted in the mass.
The opacity of the material does not allow this button to be backlit.