Changes for buy OKS button inside the minter

[triloger]

1 - Inside the minter when users switch to the light theme the text color inside the button "Buy OKS with BNB" needs to be changed to a color that suits the light theme.

2 - The hyperlink for the button needs to be changed to https://app.1inch.io/#/56/swap/BNB/OKS, the buying experience is much more pleasant in 1inch since we are whitelisted.