I usually put my main character in pale coloured suits (tan, white, grey, apricot) [link] and he sometimes rolls his sleeves up if I'm feeling particularly 80s [link]. He doesn't like hats (but was once forced to perform in a white cowboy hat covered in rhinestones) and he would never need to carry a gun (and I don't like guns )
I remember you too! But I can understand why he doesn't like hats since he is a 80's feel type of guy. He also looks like a victorian styled gentleman in the first picture, so I can understand why he doesn't see use in needing a gun considering that he must have a sharp wit among him yes?
I haven't ever really considered a choice of suit for my OC. Although frankly I haven't ever put much thought into an OC.
Personally I have always favoured a tan linen suit complete with waistcoat, a matching wide brim Panama hat and a blue oxford shirt. I favour a cravat over a tie.
I haven't ever felt the need to carry a firearm and I don't know a great deal about such things - but if I ever did it would likely be something similar to the very classy gun in this painting (by myself); [link]
Ah you like summer colors I see. I have a nice tan Royal Deluxe Stetson and its one of my favorite hats to wear! As for your side arm I see that you like a nice Walther PPK look alike (One that the famous James Bond uses)