香港的葬禮習俗

One of my colleagues' great grandpa passed away a few days ago in HK (at the age of 101) and we want to send flowers and wreath to his funeral. A few questions just to make sure that we follow all HK traditions:

1. The colors of the flowers/wreath - does it have to be in white/yellow?
It is usually in white or yellow color but if you knew that the deceased' preference then choosing that color instead.
2. Could you translate the following into Chinese that follows HK traditions?

For Mr. 金震中
with deepest condolences from the staff of the Green House
謹致金震中及其家屬深切慰問
金老太夫人千古
綠色環保團體全體團員敬輓

好簡單，你只要付錢給花檔，交上挽聯字句，先人大名，花牌就會送上靈堂。