$color;\n    color: color-yiq($color);\n\n    &.navbar-light {\n      .form-control-navbar {\n        &::placeholder {\n          color: rgba($gray-800, .8);\n        }\n        &,\n        + .input-group-append > .btn-navbar {\n          background-color: darken($color, 4%);\n          border-color: darken($color, 9%);\n          color: rgba($gray-800, .8);\n        }\n\n        &:focus {\n          &::placeholder {\n            color: $gray-800;\n          }\n          &,\n          + .input-group-append...