Transparent Paints similar to CITADEL "Blood for the Blood God" but in different colors.

Hello, I am currently looking for very transparent colors similar to "Blood for the Blood God". I really enjoy using this, due to it's glossy, transparent finish, for stuff other than blood effects, such as lamps and gemstones. I would like to have similar paints in other colors, but I can not find those, and mixing colors with gloss-varnish doesn't work.

If anyone knows similar paints (ideally not too obscure, as some brands, such as Tamiya, are plainly not available for reasonable prices here in germany), I would be most thankful.