Looks like you've installed Easy Populate CSV - a recently-developed "modification" to EP Standard 1.2.5.5, by user "phazei".

CSV means what it says "comma separated values", so you can't have a tab-delimited file in csv - it does not make logical sense.

You have a couple of options:

1. Give your colours hex values, not rgb.
2. Try encasing text in double quote marks ("text strings here"). (Not sure if this will work).
3. Abandon EP CSV and load up the conventional 1.2.5.5 module. (This works with tab-delimited files). you should not need to uninstall the csv module - just overwrite the EP files. Also, no need to worry about the database because csv uses same SQL as EP standard.)