The border of support cards that provide unit improvement should be half yellow and half white

Like some cards for african civs, if it not only seeds units but also provide strength improvement of this kind of units, the border of support cards for American civs that provide unit improvement should be half yellow and half white, for showing the difference from the cards only send same type units.
Cards may be changed:
Lakota: 5 cards
Haudenosaunee: 0 cards. But all 6 support cards only send units or resources with yellow borders should be white.
Aztecs: 9 cards
Inca: 9 cards

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