hair has turned grey meaning in Chinese

他的头发已灰白了his

His hair has turned grey .
他的头发已灰白了。
My poor mother ! her hair has turned grey
可怜的妈妈，她的头发已变成花白的了。
His hair has turned grey
他的头发花白了。
The black hair has turned grey . so now it is time to conclude such negotiations . now for that there are conditions and possibilities
黑头发都谈成了白头发了，该结束这个谈判了。现在存在这种机遇。