Are the silver ones exclusively for thermal printing and the white ones for inkjet printing ?
Or is there a silver type for inkjet as well ?
Do you have photos of both type after printing ? I've never seen them (can't open them in stores)
You will need to look at the label. Inkjet printable ones can be either white or silver. Also, thermal printable ones are white or crystal. Injet and Thermal printable are not the same.
Here is a Verbatim information page to see the different types they make.