Can't fill image with paint bucket
New to illustrator and realise that it's not the same as photoshop, but I have an image downloaded from stock photography (for a logo) but I wish to change the colour of two letters from brown to blue. I can't. Looked and looked for solutions and can't seem to find answers. When I click on the letters with the bucket it says "The selection contains objects that cannot be converted. Live paint groups can only contain paths and compound paths, Clipping paths are not allowed." How do I even begin (sorry - complete novice so would appreciate step by step - please go easy
) Thanks.
