Can you be more specific when you say "different color borders"? If they say PRESS PROOF on the bottom in a different colour like green/blue/red then those are not specific to any retailer. Actually the Only colour specific card as of 2020 are the yellow Topps baseball inserts and the yellow Dollar Tree variations of NBA Hoops, Absolute and maybe Donruss...I should've checked the list or my cards before responding. If you have the bronze PRESS PROOF or any that say "_/x" as in "_/99" that means the card should have a number stamped with the denominator indicated [ in above example there are only 99 cards made for the indicated image so the fraction would be n>99/99]
I probably just got too detailed with my math example but I'm leaving it in case it helps. Otherwise, just add an image of the card in question or look online as all of the cards have different colours in parts of the border...
- Becky