Changing form colors and adding skins

[wysota]

I want to know if i can change the color of the form or even better add a new skin to the form?

Yes, you can.

I have small window to display. If the user resizes the window all the line edits and the button will not be alligned. how can i solve this?
I have used the layouts to place the line edits and buttons in it

But you didn't apply the layout to the whole window. Remove all your layouts, click on the form so that no other objects are selected and choose the grid layout from the toolbar.