Thanks Bilka a lot. And I have another question: Can I access the pale version of pictures of items in control.lua or there is a style to set about it?

I'm creating my first mod for factorio and I want a button that is exact the same as the 'button' production statistics panel uses.
It looks like color.PNG pale.PNG
The exact functions I need are:
1. Displaying pictures
2. Clickable
3. Able to change the picture when clicked

I understand that I ...

I'm making my first mod recently, and I need to access properties of a prototype which is not listed in the properties of a LuaEntityPrototype.

For example, I need too know the energy_consumption of a boiler (see https://wiki.factorio.com/Prototype/Boiler ), but data.raw["boiler"]["boiler ...