There are a few discussions in the forums about the uses of colored bulbs. I’ll see if I can find one of those links for you. But the short answer is that in most places you could probably get by with the $15 white bulbs. (It’s the same bridge.)
https://www.amazon.com/Philips-White-Starter-light-bridge/dp/B014H2OZAC
The main reason for using colored bulbs are either just for fun effects, or for notifications. So whether you need them at all is just up to you.
Found one: