Highlighting an Entire Paragraph with Color
Recently someone asked me with help highlighting an entire paragraph. They were trying to use paragraph rules, but if the paragraph was not always the exact same number of lines, the colored background would break. The solution envelopes a combination of a custom underline and paragraph rules.
The first step is to create a paragraph style with a custom underline. I made the underline tall enough to cover the height of the leading.
Next a created a paragraph rule above and below with the same color settings as the underline.
Now, no matter what the length of the paragraph, the entire block of text will be highlighted with the same color. The only downside with this trick, is the fact that your text will have to be justified for it too look clean. Otherwise you will see a ragged edge since underlines are only the width of the text.