Hi Muji, About entry #19, we would like to see it without the slogan and the ".com" part underneath the name. Regarding the colors, is it possible to use a single color "orange". Take as an example entry #10. Instead of gray, use orange in the word "foto" and in one triangle. Please, leave the center in gray.
About #19, we feel like it has "a lot". Can you please remove the slogan and try using less color in the lens? maybe keep it to 3 different colors and maybe changing the tone? what do you think?
look on #106, #107 if in my opinion, makes it a no show full color characteristic of the company. I agree with your first suggestion with orange color indicating the identity of your company. but this is just a suggestion from me, it might be better and look more professional if you combine the two colors. you know what's best for you. good luck. if there is anything I can do for you, you can contact me.