Learn Swedish: Därför föredrar jag den andra färgen. - Therefore I prefer the other color.

Even though färg is an en-word, the phrase is in the definite form (the other color). Just like a regular adjective, annan takes the -a ending and becomes andra when it follows a definite article like den or det.

Why is the word order föredrar jag rather than jag föredrar?

This is the Swedish V2 (verb-second) rule in action. Because the sentence starts with the adverb Därför (Therefore), the verb föredrar must take the second position. This pushes the subject jag to the spot right after the verb.

Why do we need both den and the ending on färgen?

This is a classic example of Swedish double definiteness. When an adjective or a determiner like andra describes a definite noun, you must use both the free-standing article (den) before it and the definite ending (-en) attached to the end of the noun.

How does the verb föredra conjugate? Is it irregular?