Fix #1704: Theme Issues on Asset Explorer (#1717)
Fix #1704: Theme Issues on Asset Explorer (#1717)

- Outline buttons color issues solved
bitshares/bitshares-ui,bitshares/bitshares-ui,BitSharesEurope/wallet.bitshares.eu,BitSharesEurope/graphene-ui-testnet,BitSharesEurope/graphene-ui-testnet,BitSharesEurope/graphene-ui-testnet,bitshares/bitshares-2-ui,BitSharesEurope/testnet.bitshares.eu,bitshares/bitshares-ui,BitSharesEurope/testnet.bitshares.eu,bitshares/bitshares-2-ui,BitSharesEurope/wallet.bitshares.eu,bitshares/bitshares-2-ui,bitshares/bitshares-ui,BitSharesEurope/testnet.bitshares.eu,BitSharesEurope/testnet.bitshares.eu,BitSharesEurope/graphene-ui-testnet,BitSharesEurope/wallet.bitshares.eu,BitSharesEurope/wallet.bitshares.eu