Because apparently, Four is Death. from the TV Tropes page of the same name:
In most Chinese languages and languages that borrow words from it, the words for "four" (四) and "death" (死) are written differently but pronounced similarly (somewhat like "sì" in Mandarin, "sei" in Cantonese, "shi" in Sino-Japanese, "tư" in Sino-Vietnamese, and "sa" in Sino-...
According to the Wikipedia page for Japanese superstitions, in Japanese culture, the number 4 is an unlucky number because it is sometimes pronounced shi, which means death.
Also, in the Wikipedia page for Tetraphobia (the fear of the number 4):
The Chinese word for four (四, pinyin: sì, jyutping: sei3), sounds quite similar to the word for death (死, ...
As said before by @JakeM, colors usually tend to have psychological meanings, but I would have to disagree with his meanings. I think its simple to explain most of the meanings. I'll leave other sources with some other information at the end.
Light Yagami/Kira - Red
His hair and eyes go red. Red is usually associated with Rage, Fierce, ...
L's age was not mentioned in anime but in the prequel light novel Death Note Another Note, his age was mentioned as 22.
I don't have screenshot of night novel with me now, will try to come up with it if found any.
So his age in the main Manga/Anime is speculated to be 24-25. Same guess is present in deathnote.wikia.com.
I think that he bought a pack of chips and mini-TV somewhere outside the room, where noone was able to see him. He opened the package, put mini-TV inside and resealed the package, probably using smoothing iron. Then he could open the package like any other without suspicion in his room.
Source from deathnote wiki:
Ryuk tells Light of the location of each ...
Based on the wikia's description of the rules of Death note:
This note will not take effect unless the writer has the person's face in their mind when writing his/her name. Therefore, people sharing the same name will not be affected.
So even if the person's name is changed or not, the writer thinks of the person's face while writing and thus there is no ...
Probably color psychology related based off of the characters personalities.
Red being chaotic, blue being "good", light-blue is probably more based off of feminism then personality type, yellow being brash, as for purple it means wealthy or aristocratic, which fits for the Yotsuba Group.
It's an Or Else threat.
So I start by taking the life of either the director general of the NPA or the detective known as L, who's currently leading the investigation against me.
The director general or L, who [would pay] the price for your refusal to cooperate in the creation of the peaceful world?
The 2nd Kira didn't specify a specific target of their ...
Probably nothing special, he says that a lot in the anime, and he says because he finds interesting to observe what humans do in given situations, that's why he sent the death note to the Earth (also because he was bored).
There are a few reasons that come to mind:
To cover over the death of the lesser criminal he used as proof: In Episode 5, when kira confronted Raye, he killed a lesser criminal wearing glasses in front of a coffee shop who was alleged of sexual crimes to demonstrate to Raye that he is really Kira. It stands to reason that Kira, being as cautious as he is, ...
Light put the TV in the bag earlier that day. In the manga he explains to Ryuk that he is the only one in the family who eats this particular flavor of chips. This way he could be sure that none of his family members would open the bag and see the hidden mini TV.