Project A: I took a Bic 4-Color Pro and at first swapped out the yellow
BIC 4 Color Retractable Ballpoint Pens Medium Point 1.0 mm
BIC 4-Color Retractable Ballpoint Pen, Med Pt. 1.0mm, Variety 7
BIC 4 Color Ballpoint (F, M) Refill - The Pen Refill Guide
Doress 4 count Pack 4 color Ballpoint Pens Medium Point 4 - Temu
BIC Grip 4 Color Ball Pens with 3 Color + Pencil Set, 10-count
BiC ORIGINAL Pen Mini 4 in 1 COLOURS Ball Point retractable Pen
BIC 4 Colours Original Pens 3 Pack
BIC Glide Bold Retractable Ball Pen, Black, 36-Count