I was thinking of doing white ambient case lighting and didn't want to have to resort to orange lighting to emphasise the orange accents, but it's definitely an option.
The AIO I have on the 1080 Ti right now keeps the card at 46'c at full load, The Strix 1080 Ti at load gets to around 67'c so I'm not too sure that the air cooled vega will be as good in terms of cooling as one equipped with an AIO.