V4 binding evaluation drops alpha channel from the color type

import QtQuick 2.0

Item {
    property color color: Qt.rgba(0.3, 0.3, 0.3, 0.3)
    property color v4Result: true ? color : "transparent"

    Component.onCompleted: {
        console.log("Original color rgba", color.r, color.g, color.b, color.a)
        console.log("Color through V4", v4Result.r, v4Result.g, v4Result.b, v4Result.a)
    }
}

Original color 0.30000762951094834 0.30000762951094834 0.30000762951094834 0.30000762951094834
Color through V4 0.2980392156862745 0.2980392156862745 0.2980392156862745 1