I made LOTS of birthday cards with the partially started cards I found while cleaning recently. They use retired 2015-2017 In Color Envelope Paper.
Tip Top Taupe
Retired Stamp Sets: Balloon Adventures, Endless Birthday Wishes
Retired Accessories: 2015-2017 In Color Envelope Paper, Cherry On Top Washi Tape, It's My Party Washi Tape, Balloon Pop-Up Thinlits (on the Clearance Rack!)
Additional Colors: Basic Black, Bermuda Bay, Whisper White