r - Color Cells in Rstudio -


i have dataframe i've imported csv. in free text section following included caused cell in rstudio highlight red: 

<p><font style="background-color: #ff0000">sp#12. notified 7/9. ending 7/29.</font></p>    <p>boa bin 7-24-2014</p>    <p>this amendment alt252143. adding habitable basement square footage unit 1. </p>    <p><font style="background-color: #ff0000">paid nominal fee only</font></p>

i know "background-color: #ff0000"bit causing can't find how reproduce this. ideas? class of vector character. i'm using preview version of rstudio, not sure if make difference.


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