I am probably very late for this but if you are buying a new keyboard get a mechanical. You can get some cheaper ones off amazon that still work great. Lighting is a lot of fun but to get RGB you are looking at a price tag of $100 and up, that said you can get a standard backlit for much cheaper such as this or somthing like this if you dont use the keypad. With mechanical keyboards you can change the keycaps to anything you like which is very cool, check out /r/mechanicalkeyboards for more on that.

Oh and there are different switches on different mechanical keyboards, they determin how hard the key is to press, if you hear a click, and if you feel a bump on actuation. The most common switches are MX cherry browns and MX cherry reds. Check this out for more info.

I realize i am most likely already too late but oh well