affordable makeup palettes/brushes

hello there! i've just recently started doing my makeup and i wanted to branch out and try some other looks. the problem, though, is that i don't have any colourful makeup palettes or any makeup brushes (specifically for eyeshadow/eye looks in general). i was wondering if anyone could recommend some good eyeshadow palettes with colourful shades (not just like browns and pinks but the whole rainbow kind of) and any like affordable makeup brush packs. my only criteria be that it's not super expensive (honestly, anything around 50 $ would be great), brown girl friendly (im a little darker too, so please keep that in mind) and available on the sephora site. i know this is a big ask so any help is greatly appreciated :) thank you!!