By Using of Table box, Mostly you won't able to get Text color change based on value. You better use Straight table to achieve this.
Or try like this:
You can achieve the same by adding all fields as dimensions, adding one expression, hiding that expression. Then use a formula to set the color. You can use a script:
Load *, Evaluate(Color & '()') as Color2;
LOAD * INLINE
[
Color, Text
Green, ABC
Blue, DEF
Yellow, GHI
];
Use the Color2 field in your dimension / expression background or text color, as is, to set the color.