If it's a flat area, maybe a narrow putty knife? A spoon if it is where two pieces join at a corner. I believe if you wet your finger frequently, you won't get 'sticky fingers'.

I have developed a real dislike of Alex plus - and silicone caulks in general even if supposedly paintable - always turns into a dirty mess even with paint put on over it. If you're painting it brown and not white maybe that doesnt matter.

Have been using Lexel and its great - can be used at low temps and it doesnt stick to fingers at all if you run a wet finger over it! More expensive but worth it I think. It may not be easily removable though if that is your intention (but neither is silicone) .

(no I'm not getting paid by Lexel - maybe I should!)