The easiest way to change font colors is when you write a post, there is an icon that says HTML at the top of the post box. If you click on that you can change the code there to include a <font color=”#hex”> tag and put whatever color you like. You just need to know the hex#. Then click update.
As for images, once you upload them using the upload feature you need to click on the thumbnail image. There are a few features such as “Using Thumbnail, Link, Send to Editor.” Just click on Send to Editor and it will put it in with your post wherever you cursor was.
Check out this link for more info on images:
https://codex.www.ads-software.com/Using_Image_and_File_Attachments#Inserting_Images
Hope this helps!
