Typing in all capitals is forbidden, as it is widely understood to be "Shouting," and very bad "nettiquite." To add to this, the usage of StIcKY CaPs is not only annoying and difficult to read through, but is also not welcome.
Additionally, bold-face is used for emphasizing text. It alienates many users to see posts in completely bold-faced text, so please try not to do that.
Thirdly, there are two different styles on the board - a light style, and a dark style. Take this into consideration when choosing a text color for which to type your post. Black text won't be readable by users using the dark layout, and likewise, white text won't be readable by users using the light layout.