I'd go with mustard yellow and/or burnt orange. Personally I like solid colors but subtle patterns would be good, or fun fabrics.

Maybe something like this? https://www.amazon.com/dp/B07KG4DP5K/ref=cm_sw_r_cp_apa_fabc_4XYP0V94NMYC34ATBDH4

You could mix/match pillow sizes to keep it fun.