or Sculpey Translucent in the window area. If you want to tint the window a tiny bit with blue or yellow, you can do that with alcohol ink or a dry powder like scraped chalk pastels or mica powder. That would give the window a translucent, yet not totally see-through look. Good luck...
Planar metamaterial analogue of electromagnetically induced transparency for plasmonic sensing. Nano Lett. 2010, 10, 1103–1107. [CrossRef] [PubMed] 114. Verellen, N.; Dorpe, P.V.; Huang, C.; Lodewijks, K.; Vandenbosch, G.E.; Lagae, L.; Moshchalkov, V.V. Plasmon line shaping using...