I like black, because I feel relaxed when I look at it.  I also like yellow, because its a light color.        

Min U:
I like black and yello.
Becse,I feel reallaced
when I look at black,

Correct: I like black, because I feel relaxed when I look at it.
Explanation: Be careful with your spelling and punctuation. Also, when you are explaining something with one idea, it's better to just make it in a sentence.

Min U: and I like yello beacase its lighter.
Correct: I also like yellow because its a light color.
Explanation: We have to add more words to make our ideas clearer.

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Thank you, Min U for doing your homework!