For people looking at blazers, Old Navy seems to have a couple that are more affordable. I found this one that might be a little more flattering if you don't like traditional ones (like me) - open front and slightly cropped.
Also, for color: from talking with my POI, I think color is fine! Bright colors personally aren't my thing, so to be safe I would say go with colors you would see at a conference (in my experience, this is mainly jewel tones, but I've seen a lot more reds/burnt oranges/golden yellows recently). Main thing is make sure you're comfortable and professional, but let your personality show! You've all been selected because your application stands out in some way - don't be afraid to stand out as the amazing person you are at the interviews too!
Best of luck to everyone! We're all gonna crush it!