Personally I prefer using orange glasses in the evening. I do have
f.lux installed on my computer, which makes the colours a bit warmer after nightfall, but it's only a minimal difference intended primarily for visual comfort. It's by no means enough to block all blue light and thus stop the blue light from suppressing your melatonin production. If you're serious about that, then either get an orange/amber filter to put over your computer screen in the evening and some yellow or orange light bulbs, or get a pair of glasses tinted orange or amber. Anything that's more of a brown tint will be orange + black, and while it tends to distort colours less than looking through plain orange, it also makes everything darker, so it depends on which you find more comfortable.
Electrical tape is definitely the way to go for covering little lights, yep. You can buy it in an exciting variety of colours, so it won't look as obvious. The white tape doesn't block light very efficiently, so if I'm using it over something white or pale, I put down black tape to block the light and then white tape on top of that. I don't bother covering anything that emits orange or red light, as this won't affect melatonin production or sleep, but it does make it a bit easier to grope my way around the room in the dark when I need to get up for the toilet.