Let's practice applying colours with the Colour Palette.
- Open a document, size and margins do not matter right now.
- Press D to get your default colours, which are nothing for the fill colour and black for the stroke colour. (Nothing is represented by a white box with a red stripe which goes across it).
- Draw a box.
- Play around with the Colour palette and apply different colours to your shape. Change fill, change stroke, etc. Change your colours by using the sliders (less precise) or by typing in the percentages (more precise).