Make up the style of the application

[MarkiyanMatsekh]

Your task is to create a visual idea of our application - logo, colors, styles, sizes - everything that will make an assosiation with our system. You can think of facebook, yahoo, google etc - what people imagine when talk about these brands. our brand must also have its visual association. If necessary - you can also change the name of application(from current "iamopen").
Would be best if you come up with few possible solutions.
p.s. your task is somehow related to Olesia's. You two might need to negotiate.