Here's something goofy I did when I was a kid.
I'd stare at the lamp through red cellophane for a minute. When I removed the plastic and looked away, the world was greenish! I could pretend I was visiting a magic green world. Or that the regular world had a "Green Curse".
It worked with other colors too. Green plastic caused a red tint. Blue made orange (and vice versa), and yellow made purple.
I had a lot of fun.