Thx guys always nice to hear ppl appreciate your hard work ^^. Have been assembling models mostly right now, three Demigryphs and the War Altar, though I haven't glued the altar much as I think it will be much harder to paint underneath and inside the chariot.
And here is where I don't really know what colours I want to paint my altar in. I have decided though that I want to convert it into an Altar of Morr. I will use the statue from the Garden of Morr instead of the griffon and add wings to it. I will also do hanging black roses all over the altar, so a black chassi won't work well. So I'm thinking of either a quite dark purple for the chassi or maybe a dark red (but the normal altar is also painted red so I'm not as keen on this idea), another option is to paint it like I paint my Morr knights, with mostly black and red details. 
For the the Morr High Priest I think I will use the plastic AL in kit but with a scythe and robed head and probably paint him in blacks and purple. Ideas and suggestions for both colours and more conversion ideas on how to Morr:ify the altar is highly appreciated.