Well I was suggested by @DarkestKnight to summon fourth letana from kidgoms of flames for my lack of courage and confidence. I asked her for an eternal courage that I would have for ever she said that she can do this but Lucifer the guy for me so.but she gave me an incantation to crush fear and anxiety here it is “Ayashayim
Letana
Bring courage” so is this Small and rememberable incantation
No, colour doesn’t matter. When I evoke, no matter what being it is, my candles are usually whatever I have on hand. I used light blue for everything for a while until they burned down, and now I finally got my hands on some black candles.
Unless you are following a specific system where colour is important, like Hermetics, then it doesn’t matter. It’s important to remember that back in the old days, the only candles available were plain ol’ beeswax but the magick still worked.
Some spirits are given specific hours in certain traditional grimoires, yes. Various demons are split up into “day” demons, and “night” demons, for example.
However, that is only relevant if you practice the specific tradition that uses those grimoires. Most modern systems of magick eschew that stuff.