It seems the desired property of backlit keycaps is the exact opposite of those for actual typing. Thin walled, for allowing the maximum light to shine through. They will most usually be double shot ABS or PBT. I actually find around 1mm thickness is best. very contradictory to what one would desire for typing. However Tai Hao came up with a novel idea. The top and bottom walls are much thinner than the left and right. The top and bottom being about 1mm and the left nd right being about 1.5mm. However their QC is poor. Often they can deviate to as much as .8mm and 1.6mm. So they run the gamut overall from 1.4 to 1.5mm. Some claim to be 1,5mm but very few. There is a $12 set on Amazon claiming to be 1.8mm. Although every review commented they were "thin". Go figure. I vastly prefer that they shall be PBT however. Unfortunately I am pretty sure this arena is relegated to 1.4mm maximum in reality. Of course I am well aware if I forgo the backlighting I can obtain much better caps, and I have already done so. My question is: are there any caps effectively translucent which are 1.5mm or greater? Thank you