style sponsors tooltip color

src/components/Sponsors/index.tsx

@@ -50,6 +50,7 @@ const StyledSponsor = styled.li<{ handle: string }>`
       border-radius: 4px;
       font-weight: 500;
       font-size: 14px;
+      color: ${({ theme }) => theme.TEXT_NORMAL};
     }
 
     &::after {