Nice! I am planning to add a 3D print matrix and an acrylic difusser to my Gen 1 to get a similar effecg. Yours seem to be completely transparent and not diffusing at all. It is all good look nonetheless. Although I would recommend a black diffuser to test out and approach a “square-led” look.
I am planning to do so myself. The company I am found can actually get the acrylic piece precisely to your dimensions. For the tidbyt it will have to be 192mm x 96mm.
https://www.tapplastics.com/product/plastics/cut_to_size_plastic/black_led_sheet/668
I actually have done all the steps necessary. Just need to get that diffuser I shared above. Sadly, on my first attempt I got the wrong type of acrylic from a different supplier. It wasn’t a diffuser acrylic so it did not work out. However, I have kept it for now because the black translucent acrylic actually looks pretty nice. It gives a silky black look to it:
